51056816 has 20 divisors (see below), whose sum is σ = 99534552. Its totient is φ = 25370496.

The previous prime is 51056809. The next prime is 51056827. The reversal of 51056816 is 61865015.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7181 + ... + 12396.

Almost surely, 2^51056816 is an apocalyptic number.

It is an amenable number.

51056816 is a deficient number, since it is larger than the sum of its proper divisors (48477736).

51056816 is a wasteful number, since it uses less digits than its factorization.

51056816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19748 (or 19742 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51056816 is about 7145.4052369337. The cubic root of 51056816 is about 370.9806370261.

The spelling of 51056816 in words is "fifty-one million, fifty-six thousand, eight hundred sixteen".