51253632 has 48 divisors (see below), whose sum is σ = 147490980. Its totient is φ = 17084160.

The previous prime is 51253627. The next prime is 51253667. The reversal of 51253632 is 23635215.

51253632 is a `hidden beast` number, since 5 + 1 + 25 + 3 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51253596 and 51253605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21094 + ... + 23397.

Almost surely, 2^51253632 is an apocalyptic number.

It is an amenable number.

51253632 is an abundant number, since it is smaller than the sum of its proper divisors (96237348).

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

51253632 is a wasteful number, since it uses less digits than its factorization.

51253632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44511 (or 44496 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 51253632 is about 7159.1641970275. The cubic root of 51253632 is about 371.4567164922.

Adding to 51253632 its reverse (23635215), we get a palindrome (74888847).

The spelling of 51253632 in words is "fifty-one million, two hundred fifty-three thousand, six hundred thirty-two".