51522515023 has 16 divisors (see below), whose sum is σ = 62086590720. Its totient is φ = 41767214976.

The previous prime is 51522515017. The next prime is 51522515029. The reversal of 51522515023 is 32051522515.

It is an interprime number because it is at equal distance from previous prime (51522515017) and next prime (51522515029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51522515023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522515029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247765 + ... + 405502.

It is an arithmetic number, because the mean of its divisors is an integer number (3880411920).

Almost surely, 2^51522515023 is an apocalyptic number.

51522515023 is a deficient number, since it is larger than the sum of its proper divisors (10564075697).

51522515023 is a wasteful number, since it uses less digits than its factorization.

51522515023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653886.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 51522515023 in words is "fifty-one billion, five hundred twenty-two million, five hundred fifteen thousand, twenty-three".