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55051101145 = 550921631081
BaseRepresentation
bin110011010001010011…
…010010001111011001
312021002121100200210001
4303101103102033121
51400221040214040
641142400053001
73656134432105
oct632123221731
9167077320701
1055051101145
112138aa03107
12a804604161
135264380c81
1429434d4905
15167304259a
hexcd14d23d9

55051101145 has 8 divisors (see below), whose sum is σ = 66191110920. Its totient is φ = 43954354560.

The previous prime is 55051101143. The next prime is 55051101167. The reversal of 55051101145 is 54110115055.

55051101145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2249035776 + 52802065369 = 47424^2 + 229787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55051101145 - 21 = 55051101143 is a prime.

It is a super-2 number, since 2×550511011452 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55051101143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10812996 + ... + 10818085.

It is an arithmetic number, because the mean of its divisors is an integer number (8273888865).

Almost surely, 255051101145 is an apocalyptic number.

It is an amenable number.

55051101145 is a deficient number, since it is larger than the sum of its proper divisors (11140009775).

55051101145 is a wasteful number, since it uses less digits than its factorization.

55051101145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21631595.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 55051101145 in words is "fifty-five billion, fifty-one million, one hundred one thousand, one hundred forty-five".

Divisors: 1 5 509 2545 21631081 108155405 11010220229 55051101145