51398632 has 16 divisors (see below), whose sum is σ = 96596640. Its totient is φ = 25639536.

The previous prime is 51398609. The next prime is 51398687. The reversal of 51398632 is 23689315.

It is a junction number, because it is equal to n+sod(n) for n = 51398591 and 51398600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3708 + ... + 10795.

It is an arithmetic number, because the mean of its divisors is an integer number (6037290).

Almost surely, 2^51398632 is an apocalyptic number.

It is an amenable number.

51398632 is a deficient number, since it is larger than the sum of its proper divisors (45198008).

51398632 is a wasteful number, since it uses less digits than its factorization.

51398632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14952 (or 14948 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 51398632 is about 7169.2839251909. The cubic root of 51398632 is about 371.8066787558.

The spelling of 51398632 in words is "fifty-one million, three hundred ninety-eight thousand, six hundred thirty-two".