51672915 has 48 divisors (see below), whose sum is σ = 104884416. Its totient is φ = 23040000.

The previous prime is 51672899. The next prime is 51672931. The reversal of 51672915 is 51927615.

It is an interprime number because it is at equal distance from previous prime (51672899) and next prime (51672931).

It is not a de Polignac number, because 51672915 - 2⁴ = 51672899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51672915.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10915 + ... + 14915.

It is an arithmetic number, because the mean of its divisors is an integer number (2185092).

Almost surely, 2^51672915 is an apocalyptic number.

51672915 is an abundant number, since it is smaller than the sum of its proper divisors (53211501).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51672915 is a wasteful number, since it uses less digits than its factorization.

51672915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060 (or 4057 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 51672915 is about 7188.3875104226. The cubic root of 51672915 is about 372.4668739216.

The spelling of 51672915 in words is "fifty-one million, six hundred seventy-two thousand, nine hundred fifteen".