51576432 has 20 divisors (see below), whose sum is σ = 133239240. Its totient is φ = 17192128.

The previous prime is 51576407. The next prime is 51576433. The reversal of 51576432 is 23467515.

It is a junction number, because it is equal to n+sod(n) for n = 51576393 and 51576402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51576433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537207 + ... + 537302.

It is an arithmetic number, because the mean of its divisors is an integer number (6661962).

Almost surely, 2^51576432 is an apocalyptic number.

It is an amenable number.

51576432 is an abundant number, since it is smaller than the sum of its proper divisors (81662808).

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

51576432 is a wasteful number, since it uses less digits than its factorization.

51576432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074520 (or 1074514 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 51576432 is about 7181.6733426131. The cubic root of 51576432 is about 372.2349077069.

The spelling of 51576432 in words is "fifty-one million, five hundred seventy-six thousand, four hundred thirty-two".