52791920 has 20 divisors (see below), whose sum is σ = 122741400. Its totient is φ = 21116736.

The previous prime is 52791911. The next prime is 52791931. The reversal of 52791920 is 2919725.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 329870 + ... + 330029.

It is an arithmetic number, because the mean of its divisors is an integer number (6137070).

Almost surely, 2^52791920 is an apocalyptic number.

It is an amenable number.

52791920 is an abundant number, since it is smaller than the sum of its proper divisors (69949480).

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

52791920 is a wasteful number, since it uses less digits than its factorization.

52791920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659912 (or 659906 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 52791920 is about 7265.8048418603. The cubic root of 52791920 is about 375.1363533776.

The spelling of 52791920 in words is "fifty-two million, seven hundred ninety-one thousand, nine hundred twenty".