52997220 has 48 divisors (see below), whose sum is σ = 164881920. Its totient is φ = 14132448.

The previous prime is 52997179. The next prime is 52997233. The reversal of 52997220 is 2279925.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 15 ways as a sum of consecutive naturals, for example, 48532 + ... + 49611.

It is an arithmetic number, because the mean of its divisors is an integer number (3435040).

Almost surely, 2^52997220 is an apocalyptic number.

It is an amenable number.

52997220 is an abundant number, since it is smaller than the sum of its proper divisors (111884700).

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

52997220 is a wasteful number, since it uses less digits than its factorization.

52997220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98161 (or 98153 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 52997220 is about 7279.9189555928. The cubic root of 52997220 is about 375.6220077133.

The spelling of 52997220 in words is "fifty-two million, nine hundred ninety-seven thousand, two hundred twenty".