51464831 has 12 divisors (see below), whose sum is σ = 59643960. Its totient is φ = 44031360.

The previous prime is 51464813. The next prime is 51464837. The reversal of 51464831 is 13846415.

It is not a de Polignac number, because 51464831 - 2⁶ = 51464767 is a prime.

It is a super-2 number, since 2×51464831² = 5297257659717122, which 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 (51464837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4916 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (4970330).

Almost surely, 2^51464831 is an apocalyptic number.

51464831 is a deficient number, since it is larger than the sum of its proper divisors (8179129).

51464831 is a wasteful number, since it uses less digits than its factorization.

51464831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16234 (or 16217 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 51464831 is about 7173.8992883926. The cubic root of 51464831 is about 371.9662333979.

The spelling of 51464831 in words is "fifty-one million, four hundred sixty-four thousand, eight hundred thirty-one".