51582532 has 12 divisors (see below), whose sum is σ = 93382380. Its totient is φ = 24901856.

The previous prime is 51582527. The next prime is 51582533. The reversal of 51582532 is 23528515.

It can be written as a sum of positive squares in 2 ways, for example, as 13439556 + 38142976 = 3666^2 + 6176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51582494 and 51582503.

It is not an unprimeable number, because it can be changed into a prime (51582533) 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, 222223 + ... + 222454.

It is an arithmetic number, because the mean of its divisors is an integer number (7781865).

Almost surely, 2^51582532 is an apocalyptic number.

It is an amenable number.

51582532 is a deficient number, since it is larger than the sum of its proper divisors (41799848).

51582532 is a wasteful number, since it uses less digits than its factorization.

51582532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444710 (or 444708 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 51582532 is about 7182.0980221659. The cubic root of 51582532 is about 372.2495820025.

The spelling of 51582532 in words is "fifty-one million, five hundred eighty-two thousand, five hundred thirty-two".