51723256 has 16 divisors (see below), whose sum is σ = 104441400. Its totient is φ = 23872224.

The previous prime is 51723253. The next prime is 51723257. The reversal of 51723256 is 65232715.

It is a super-2 number, since 2×51723256² = 5350590422483072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51723253) 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, 248566 + ... + 248773.

Almost surely, 2^51723256 is an apocalyptic number.

It is an amenable number.

51723256 is an abundant number, since it is smaller than the sum of its proper divisors (52718144).

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

51723256 is a wasteful number, since it uses less digits than its factorization.

51723256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497358 (or 497354 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 51723256 is about 7191.8882082524. Note that the first 3 decimals coincide. The cubic root of 51723256 is about 372.5877900675.

The spelling of 51723256 in words is "fifty-one million, seven hundred twenty-three thousand, two hundred fifty-six".