51693582 has 16 divisors (see below), whose sum is σ = 104931072. Its totient is φ = 16973880.

The previous prime is 51693569. The next prime is 51693599. The reversal of 51693582 is 28539615.

It is a self number, because there is not a number n which added to its sum of digits gives 51693582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63894 + ... + 64697.

It is an arithmetic number, because the mean of its divisors is an integer number (6558192).

Almost surely, 2^51693582 is an apocalyptic number.

51693582 is an abundant number, since it is smaller than the sum of its proper divisors (53237490).

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

51693582 is a wasteful number, since it uses less digits than its factorization.

51693582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128663.

The product of its digits is 64800, while the sum is 39.

The square root of 51693582 is about 7189.8248935562. The cubic root of 51693582 is about 372.5165243484.

The spelling of 51693582 in words is "fifty-one million, six hundred ninety-three thousand, five hundred eighty-two".