51670256 has 40 divisors (see below), whose sum is σ = 109908144. Its totient is φ = 23336960.

The previous prime is 51670247. The next prime is 51670261. The reversal of 51670256 is 65207615.

It is a happy number.

It is a congruent number.

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, 29600 + ... + 31296.

Almost surely, 2^51670256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51670256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54954072).

51670256 is an abundant number, since it is smaller than the sum of its proper divisors (58237888).

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

51670256 is a wasteful number, since it uses less digits than its factorization.

51670256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 51670256 is about 7188.2025569679. The cubic root of 51670256 is about 372.4604849755.

The spelling of 51670256 in words is "fifty-one million, six hundred seventy thousand, two hundred fifty-six".