51308436 has 24 divisors (see below), whose sum is σ = 126021280. Its totient is φ = 16202592.

The previous prime is 51308419. The next prime is 51308447. The reversal of 51308436 is 63480315.

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, 112291 + ... + 112746.

Almost surely, 2^51308436 is an apocalyptic number.

It is an amenable number.

51308436 is an abundant number, since it is smaller than the sum of its proper divisors (74712844).

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

51308436 is a wasteful number, since it uses less digits than its factorization.

51308436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225063 (or 225061 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 51308436 is about 7162.9907161744. The cubic root of 51308436 is about 371.5890652421.

The spelling of 51308436 in words is "fifty-one million, three hundred eight thousand, four hundred thirty-six".