51273432 has 64 divisors (see below), whose sum is σ = 162777600. Its totient is φ = 14649120.

The previous prime is 51273413. The next prime is 51273511. The reversal of 51273432 is 23437215.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 51273396 and 51273405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15444 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (2543400).

Almost surely, 2^51273432 is an apocalyptic number.

It is an amenable number.

51273432 is an abundant number, since it is smaller than the sum of its proper divisors (111504168).

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

51273432 is a wasteful number, since it uses less digits than its factorization.

51273432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33933 (or 33923 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 51273432 is about 7160.5469064870. The cubic root of 51273432 is about 371.5045433213.

The spelling of 51273432 in words is "fifty-one million, two hundred seventy-three thousand, four hundred thirty-two".