54131132520 has 64 divisors (see below), whose sum is σ = 180437112000. Its totient is φ = 14434968384.

The previous prime is 54131132501. The next prime is 54131132537. The reversal of 54131132520 is 2523113145.

54131132520 is a `hidden beast` number, since 5 + 4 + 1 + 3 + 1 + 132 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 25059630 + ... + 25061789.

It is an arithmetic number, because the mean of its divisors is an integer number (2819329875).

Almost surely, 2^54131132520 is an apocalyptic number.

It is an amenable number.

54131132520 is an abundant number, since it is smaller than the sum of its proper divisors (126305979480).

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

54131132520 is a wasteful number, since it uses less digits than its factorization.

54131132520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50121439 (or 50121429 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 54131132520 its reverse (2523113145), we get a palindrome (56654245665).

The spelling of 54131132520 in words is "fifty-four billion, one hundred thirty-one million, one hundred thirty-two thousand, five hundred twenty".