51415232 has 56 divisors (see below), whose sum is σ = 112166400. Its totient is φ = 23189760.

The previous prime is 51415219. The next prime is 51415249. The reversal of 51415232 is 23251415.

It is a super-2 number, since 2×51415232² = 5287052163227648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51415198 and 51415207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139913 + ... + 140279.

Almost surely, 2^51415232 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 51415232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56083200).

51415232 is an abundant number, since it is smaller than the sum of its proper divisors (60751168).

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

51415232 is a wasteful number, since it uses less digits than its factorization.

51415232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 579 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 51415232 is about 7170.4415484683. The cubic root of 51415232 is about 371.8467013939.

Adding to 51415232 its reverse (23251415), we get a palindrome (74666647).

The spelling of 51415232 in words is "fifty-one million, four hundred fifteen thousand, two hundred thirty-two".