55371870553505 has 12 divisors (see below), whose sum is σ = 73035954879636. Its totient is φ = 40270451311200.

The previous prime is 55371870553477. The next prime is 55371870553511. The reversal of 55371870553505 is 50535507817355.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23822091500944 + 31549779052561 = 4880788^2 + 5616919^2 .

It is not a de Polignac number, because 55371870553505 - 2²⁴ = 55371853776289 is a prime.

It is a super-2 number, since 2×55371870553505² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45761875886 + ... + 45761877095.

It is an arithmetic number, because the mean of its divisors is an integer number (6086329573303).

Almost surely, 2^{55371870553505} is an apocalyptic number.

55371870553505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55371870553505 is a deficient number, since it is larger than the sum of its proper divisors (17664084326131).

55371870553505 is a wasteful number, since it uses less digits than its factorization.

55371870553505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91523753008 (or 91523752997 counting only the distinct ones).

The product of its (nonzero) digits is 55125000, while the sum is 59.

The spelling of 55371870553505 in words is "fifty-five trillion, three hundred seventy-one billion, eight hundred seventy million, five hundred fifty-three thousand, five hundred five".