52991980 has 24 divisors (see below), whose sum is σ = 111675312. Its totient is φ = 21122112.

The previous prime is 52991951. The next prime is 52991987. The reversal of 52991980 is 8919925.

It is not an unprimeable number, because it can be changed into a prime (52991987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (4653138).

Almost surely, 2^52991980 is an apocalyptic number.

It is an amenable number.

52991980 is an abundant number, since it is smaller than the sum of its proper divisors (58683332).

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

52991980 is a wasteful number, since it uses less digits than its factorization.

52991980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345 (or 9343 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 52991980 is about 7279.5590525800. The cubic root of 52991980 is about 375.6096276665.

The spelling of 52991980 in words is "fifty-two million, nine hundred ninety-one thousand, nine hundred eighty".