51273256 has 64 divisors (see below), whose sum is σ = 105753600. Its totient is φ = 23232000.

The previous prime is 51273253. The next prime is 51273259. The reversal of 51273256 is 65237215.

It is an interprime number because it is at equal distance from previous prime (51273253) and next prime (51273259).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (51273251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507606 + ... + 507706.

It is an arithmetic number, because the mean of its divisors is an integer number (1652400).

Almost surely, 2^51273256 is an apocalyptic number.

It is an amenable number.

51273256 is an abundant number, since it is smaller than the sum of its proper divisors (54480344).

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

51273256 is a wasteful number, since it uses less digits than its factorization.

51273256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 246 counting only the distinct ones).

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

The square root of 51273256 is about 7160.5346169123. The cubic root of 51273256 is about 371.5041182482.

It can be divided in two parts, 51273 and 256, that added together give a square (51529 = 227²).

The spelling of 51273256 in words is "fifty-one million, two hundred seventy-three thousand, two hundred fifty-six".