51520551526 has 16 divisors (see below), whose sum is σ = 81833302080. Its totient is φ = 24243026560.

The previous prime is 51520551491. The next prime is 51520551557. The reversal of 51520551526 is 62515502515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427896 + ... + 534916.

It is an arithmetic number, because the mean of its divisors is an integer number (5114581380).

Almost surely, 2^51520551526 is an apocalyptic number.

51520551526 is a deficient number, since it is larger than the sum of its proper divisors (30312750554).

51520551526 is a wasteful number, since it uses less digits than its factorization.

51520551526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121199.

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 51520551526 in words is "fifty-one billion, five hundred twenty million, five hundred fifty-one thousand, five hundred twenty-six".