51326578 has 32 divisors (see below), whose sum is σ = 82814400. Its totient is φ = 23814336.

The previous prime is 51326573. The next prime is 51326591. The reversal of 51326578 is 87562315.

It is not an unprimeable number, because it can be changed into a prime (51326573) 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, 181225 + ... + 181507.

It is an arithmetic number, because the mean of its divisors is an integer number (2587950).

Almost surely, 2^51326578 is an apocalyptic number.

51326578 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51326578 is a deficient number, since it is larger than the sum of its proper divisors (31487822).

51326578 is a wasteful number, since it uses less digits than its factorization.

51326578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its digits is 50400, while the sum is 37.

The square root of 51326578 is about 7164.2569747323. The cubic root of 51326578 is about 371.6328564452.

The spelling of 51326578 in words is "fifty-one million, three hundred twenty-six thousand, five hundred seventy-eight".