51005150531 has 16 divisors (see below), whose sum is σ = 52052162400. Its totient is φ = 49970131200.

The previous prime is 51005150519. The next prime is 51005150561. The reversal of 51005150531 is 13505150015.

It is a cyclic number.

It is not a de Polignac number, because 51005150531 - 2²⁶ = 50938041667 is a prime.

It is a super-2 number, since 2×51005150531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51005150531.

It is not an unprimeable number, because it can be changed into a prime (51005150561) 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, 6688901 + ... + 6696521.

It is an arithmetic number, because the mean of its divisors is an integer number (3253260150).

Almost surely, 2^51005150531 is an apocalyptic number.

51005150531 is a deficient number, since it is larger than the sum of its proper divisors (1047011869).

51005150531 is a wasteful number, since it uses less digits than its factorization.

51005150531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390.

The product of its (nonzero) digits is 1875, while the sum is 26.

The spelling of 51005150531 in words is "fifty-one billion, five million, one hundred fifty thousand, five hundred thirty-one".