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55411747609 = 2353972

55411747609 has 3 divisors (see below), whose sum is σ = 55411983007. Its totient is φ = 55411512212.

The previous prime is 55411747597. The next prime is 55411747619. The reversal of 55411747609 is 90674711455.

The square root of 55411747609 is 235397.

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

55411747609 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.

It can be written as a sum of positive squares in only one way, i.e., 26385129225 + 29026618384 = 162435^2 + 170372^2 .

It is not a de Polignac number, because 55411747609 - 223 = 55403359001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55411747619) 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, 117699 + ... + 353095.

Almost surely, 255411747609 is an apocalyptic number.

55411747609 is the 235397-th square number.

55411747609 is the 117699-th centered octagonal number.

It is an amenable number.

55411747609 is a deficient number, since it is larger than the sum of its proper divisors (235398).

55411747609 is an frugal number, since it uses more digits than its factorization.

55411747609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470794 (or 235397 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

Multiplying 55411747609 by its sum of digits (49), we get a square (2715175632841 = 16477792).

The spelling of 55411747609 in words is "fifty-five billion, four hundred eleven million, seven hundred forty-seven thousand, six hundred nine".

Divisors: 1 235397 55411747609