51695248 has 20 divisors (see below), whose sum is σ = 109265328. Its totient is φ = 23497760.

The previous prime is 51695213. The next prime is 51695261. The reversal of 51695248 is 84259615.

It is a self number, because there is not a number n which added to its sum of digits gives 51695248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146686 + ... + 147037.

Almost surely, 2^51695248 is an apocalyptic number.

It is an amenable number.

51695248 is an abundant number, since it is smaller than the sum of its proper divisors (57570080).

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

51695248 is a wasteful number, since it uses less digits than its factorization.

51695248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293742 (or 293736 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 51695248 is about 7189.9407507990. The cubic root of 51695248 is about 372.5205261725.

The spelling of 51695248 in words is "fifty-one million, six hundred ninety-five thousand, two hundred forty-eight".