51534204520 has 32 divisors (see below), whose sum is σ = 116221029120. Its totient is φ = 20565847360.

The previous prime is 51534204479. The next prime is 51534204521. The reversal of 51534204520 is 2540243515.

It is not an unprimeable number, because it can be changed into a prime (51534204521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477372 + ... + 1511851.

It is an arithmetic number, because the mean of its divisors is an integer number (3631907160).

Almost surely, 2^51534204520 is an apocalyptic number.

It is an amenable number.

51534204520 is an abundant number, since it is smaller than the sum of its proper divisors (64686824600).

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

51534204520 is a wasteful number, since it uses less digits than its factorization.

51534204520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989665 (or 2989661 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 51534204520 in words is "fifty-one billion, five hundred thirty-four million, two hundred four thousand, five hundred twenty".