52155616554 has 32 divisors (see below), whose sum is σ = 116001167040. Its totient is φ = 17370236016.

The previous prime is 52155616549. The next prime is 52155616567. The reversal of 52155616554 is 45561655125.

It is a happy number.

52155616554 is a `hidden beast` number, since 5 + 21 + 5 + 5 + 616 + 5 + 5 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 352437 + ... + 478040.

It is an arithmetic number, because the mean of its divisors is an integer number (3625036470).

Almost surely, 2^52155616554 is an apocalyptic number.

52155616554 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

52155616554 is an abundant number, since it is smaller than the sum of its proper divisors (63845550486).

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

52155616554 is a wasteful number, since it uses less digits than its factorization.

52155616554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831651 (or 831645 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The spelling of 52155616554 in words is "fifty-two billion, one hundred fifty-five million, six hundred sixteen thousand, five hundred fifty-four".