51559232 has 28 divisors (see below), whose sum is σ = 108333540. Its totient is φ = 24262656.

The previous prime is 51559229. The next prime is 51559259. The reversal of 51559232 is 23295515.

It can be written as a sum of positive squares in 2 ways, for example, as 17172736 + 34386496 = 4144^2 + 5864^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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, 22607 + ... + 24782.

It is an arithmetic number, because the mean of its divisors is an integer number (3869055).

Almost surely, 2^51559232 is an apocalyptic number.

It is an amenable number.

51559232 is an abundant number, since it is smaller than the sum of its proper divisors (56774308).

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

51559232 is a wasteful number, since it uses less digits than its factorization.

51559232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47418 (or 47408 counting only the distinct ones).

The product of its digits is 13500, while the sum is 32.

The square root of 51559232 is about 7180.4757502550. The cubic root of 51559232 is about 372.1935247729.

The spelling of 51559232 in words is "fifty-one million, five hundred fifty-nine thousand, two hundred thirty-two".