51150915 has 24 divisors (see below), whose sum is σ = 89348688. Its totient is φ = 27069120.

The previous prime is 51150893. The next prime is 51150929. The reversal of 51150915 is 51905115.

It is not a de Polignac number, because 51150915 - 2¹³ = 51142723 is a prime.

It is a super-2 number, since 2×51150915² = 5232832210674450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1557 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (3722862).

Almost surely, 2^51150915 is an apocalyptic number.

51150915 is a deficient number, since it is larger than the sum of its proper divisors (38197773).

51150915 is a wasteful number, since it uses less digits than its factorization.

51150915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8819 (or 8816 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 51150915 is about 7151.9867869005. The cubic root of 51150915 is about 371.2084060465.

It can be divided in two parts, 5 and 1150915, that multiplied together give a palindrome (5754575).

The spelling of 51150915 in words is "fifty-one million, one hundred fifty thousand, nine hundred fifteen".