55131695520 has 192 divisors, whose sum is σ = 197690056704. Its totient is φ = 12784133120.

The previous prime is 55131695519. The next prime is 55131695557. The reversal of 55131695520 is 2559613155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105552 + ... + 348431.

It is an arithmetic number, because the mean of its divisors is an integer number (1029635712).

Almost surely, 2^55131695520 is an apocalyptic number.

It is an amenable number.

55131695520 is an abundant number, since it is smaller than the sum of its proper divisors (142558361184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55131695520 is a wasteful number, since it uses less digits than its factorization.

55131695520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454035 (or 454027 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 42.

The spelling of 55131695520 in words is "fifty-five billion, one hundred thirty-one million, six hundred ninety-five thousand, five hundred twenty".