51520692 has 24 divisors (see below), whose sum is σ = 120383200. Its totient is φ = 17149536.

The previous prime is 51520643. The next prime is 51520709. The reversal of 51520692 is 29602515.

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 7 ways as a sum of consecutive naturals, for example, 7359 + ... + 12537.

Almost surely, 2^51520692 is an apocalyptic number.

It is an amenable number.

51520692 is an abundant number, since it is smaller than the sum of its proper divisors (68862508).

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

51520692 is a wasteful number, since it uses less digits than its factorization.

51520692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015 (or 6013 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51520692 is about 7177.7915823741. The cubic root of 51520692 is about 372.1007647022.

The spelling of 51520692 in words is "fifty-one million, five hundred twenty thousand, six hundred ninety-two".