51986632 has 16 divisors (see below), whose sum is σ = 97907760. Its totient is φ = 25877904.

The previous prime is 51986617. The next prime is 51986657. The reversal of 51986632 is 23668915.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12498 + ... + 16129.

It is an arithmetic number, because the mean of its divisors is an integer number (6119235).

Almost surely, 2^51986632 is an apocalyptic number.

It is an amenable number.

51986632 is a deficient number, since it is larger than the sum of its proper divisors (45921128).

51986632 is a wasteful number, since it uses less digits than its factorization.

51986632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28860 (or 28856 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 51986632 is about 7210.1755873210. The cubic root of 51986632 is about 373.2191281910.

The spelling of 51986632 in words is "fifty-one million, nine hundred eighty-six thousand, six hundred thirty-two".