52191980 has 12 divisors (see below), whose sum is σ = 109603200. Its totient is φ = 20876784.

The previous prime is 52191959. The next prime is 52192001. The reversal of 52191980 is 8919125.

52191980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52191959) and next prime (52192001).

It is a self number, because there is not a number n which added to its sum of digits gives 52191980.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304780 + ... + 1304819.

It is an arithmetic number, because the mean of its divisors is an integer number (9133600).

Almost surely, 2^52191980 is an apocalyptic number.

It is an amenable number.

52191980 is an abundant number, since it is smaller than the sum of its proper divisors (57411220).

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

52191980 is a wasteful number, since it uses less digits than its factorization.

52191980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609608 (or 2609606 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 52191980 is about 7224.4017053317. The cubic root of 52191980 is about 373.7098896938.

The spelling of 52191980 in words is "fifty-two million, one hundred ninety-one thousand, nine hundred eighty".