51436464 has 40 divisors (see below), whose sum is σ = 138657792. Its totient is φ = 16399680.

The previous prime is 51436433. The next prime is 51436493. The reversal of 51436464 is 46463415.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22192 + ... + 24399.

Almost surely, 2^51436464 is an apocalyptic number.

It is an amenable number.

51436464 is an abundant number, since it is smaller than the sum of its proper divisors (87221328).

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

51436464 is a wasteful number, since it uses less digits than its factorization.

51436464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46625 (or 46619 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 51436464 is about 7171.9219181472. The cubic root of 51436464 is about 371.8978792411.

Adding to 51436464 its reverse (46463415), we get a palindrome (97899879).

The spelling of 51436464 in words is "fifty-one million, four hundred thirty-six thousand, four hundred sixty-four".