51315000157 has 16 divisors (see below), whose sum is σ = 54811149120. Its totient is φ = 47873025792.

The previous prime is 51315000131. The next prime is 51315000199. The reversal of 51315000157 is 75100051315.

It is a cyclic number.

It is not a de Polignac number, because 51315000157 - 2³¹ = 49167516509 is a prime.

It is a super-2 number, since 2×51315000157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51315000757) 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, 1502523 + ... + 1536295.

It is an arithmetic number, because the mean of its divisors is an integer number (3425696820).

Almost surely, 2^51315000157 is an apocalyptic number.

It is an amenable number.

51315000157 is a deficient number, since it is larger than the sum of its proper divisors (3496148963).

51315000157 is a wasteful number, since it uses less digits than its factorization.

51315000157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34572.

The product of its (nonzero) digits is 2625, while the sum is 28.

The spelling of 51315000157 in words is "fifty-one billion, three hundred fifteen million, one hundred fifty-seven", and thus it is an aban number.