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55310102761 = 2351812
BaseRepresentation
bin110011100000101111…
…010011000011101001
312021202122201100012111
4303200233103003221
51401233341242021
641224211242321
73665431054624
oct634057230351
9167678640174
1055310102761
1121503124931
12a8772a93a1
1352a5c25974
142969a74dbb
15168ab538e1
hexce0bd30e9

55310102761 has 3 divisors (see below), whose sum is σ = 55310337943. Its totient is φ = 55309867580.

The previous prime is 55310102723. The next prime is 55310102789. The reversal of 55310102761 is 16720101355.

The square root of 55310102761 is 235181.

It is a perfect power (a square), and thus also a powerful number.

55310102761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16720101355 = 53344020271.

It can be written as a sum of positive squares in only one way, i.e., 10204838361 + 45105264400 = 101019^2 + 212380^2 .

It is not a de Polignac number, because 55310102761 - 219 = 55309578473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55310102711) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 117591 + ... + 352771.

Almost surely, 255310102761 is an apocalyptic number.

55310102761 is the 235181-st square number.

55310102761 is the 117591-st centered octagonal number.

It is an amenable number.

55310102761 is a deficient number, since it is larger than the sum of its proper divisors (235182).

55310102761 is an frugal number, since it uses more digits than its factorization.

55310102761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470362 (or 235181 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The spelling of 55310102761 in words is "fifty-five billion, three hundred ten million, one hundred two thousand, seven hundred sixty-one".

Divisors: 1 235181 55310102761