51173232 has 80 divisors (see below), whose sum is σ = 151835520. Its totient is φ = 14688000.

The previous prime is 51173231. The next prime is 51173233. The reversal of 51173232 is 23237115.

51173232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51173231) and next prime (51173233).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51173231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7482 + ... + 12582.

It is an arithmetic number, because the mean of its divisors is an integer number (1897944).

Almost surely, 2^51173232 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 51173232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75917760).

51173232 is an abundant number, since it is smaller than the sum of its proper divisors (100662288).

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

51173232 is a wasteful number, since it uses less digits than its factorization.

51173232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142 (or 5136 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 51173232 is about 7153.5468125958. The cubic root of 51173232 is about 371.2623839241.

The spelling of 51173232 in words is "fifty-one million, one hundred seventy-three thousand, two hundred thirty-two".