51659932 has 12 divisors (see below), whose sum is σ = 94335696. Its totient is φ = 24706880.

The previous prime is 51659929. The next prime is 51659963. The reversal of 51659932 is 23995615.

It is a happy number.

It is a congruent number.

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, 280669 + ... + 280852.

It is an arithmetic number, because the mean of its divisors is an integer number (7861308).

Almost surely, 2^51659932 is an apocalyptic number.

It is an amenable number.

51659932 is a deficient number, since it is larger than the sum of its proper divisors (42675764).

51659932 is a wasteful number, since it uses less digits than its factorization.

51659932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561548 (or 561546 counting only the distinct ones).

The product of its digits is 72900, while the sum is 40.

The square root of 51659932 is about 7187.4843999831. The cubic root of 51659932 is about 372.4356767752.

The spelling of 51659932 in words is "fifty-one million, six hundred fifty-nine thousand, nine hundred thirty-two".