51626520 has 96 divisors (see below), whose sum is σ = 183053520. Its totient is φ = 12514560.

The previous prime is 51626489. The next prime is 51626521. The reversal of 51626520 is 2562615.

51626520 is a `hidden beast` number, since 5 + 1 + 6 + 2 + 652 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51626521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2559 + ... + 10478.

Almost surely, 2^51626520 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 51626520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91526760).

51626520 is an abundant number, since it is smaller than the sum of its proper divisors (131427000).

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

51626520 is a wasteful number, since it uses less digits than its factorization.

51626520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13065 (or 13058 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 51626520 is about 7185.1597059495. The cubic root of 51626520 is about 372.3553662775.

The spelling of 51626520 in words is "fifty-one million, six hundred twenty-six thousand, five hundred twenty".