51364432 has 20 divisors (see below), whose sum is σ = 113735776. Its totient is φ = 22013280.

The previous prime is 51364421. The next prime is 51364433. The reversal of 51364432 is 23446315.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 51364432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51364433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229194 + ... + 229417.

Almost surely, 2^51364432 is an apocalyptic number.

It is an amenable number.

51364432 is an abundant number, since it is smaller than the sum of its proper divisors (62371344).

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

51364432 is a wasteful number, since it uses less digits than its factorization.

51364432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458626 (or 458620 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 51364432 is about 7166.8983528441. The cubic root of 51364432 is about 371.7241953040.

The spelling of 51364432 in words is "fifty-one million, three hundred sixty-four thousand, four hundred thirty-two".