51438696 has 16 divisors (see below), whose sum is σ = 128596800. Its totient is φ = 17146224.

The previous prime is 51438689. The next prime is 51438697. The reversal of 51438696 is 69683415.

It is not an unprimeable number, because it can be changed into a prime (51438697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071616 + ... + 1071663.

It is an arithmetic number, because the mean of its divisors is an integer number (8037300).

Almost surely, 2^51438696 is an apocalyptic number.

It is an amenable number.

51438696 is an abundant number, since it is smaller than the sum of its proper divisors (77158104).

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

51438696 is a wasteful number, since it uses less digits than its factorization.

51438696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143288 (or 2143284 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 51438696 is about 7172.0775232843. The cubic root of 51438696 is about 371.9032584604.

The spelling of 51438696 in words is "fifty-one million, four hundred thirty-eight thousand, six hundred ninety-six".