53297220 has 24 divisors (see below), whose sum is σ = 149232384. Its totient is φ = 14212576.

The previous prime is 53297203. The next prime is 53297243. The reversal of 53297220 is 2279235.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 444084 + ... + 444203.

It is an arithmetic number, because the mean of its divisors is an integer number (6218016).

Almost surely, 2^53297220 is an apocalyptic number.

It is an amenable number.

53297220 is an abundant number, since it is smaller than the sum of its proper divisors (95935164).

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

53297220 is a wasteful number, since it uses less digits than its factorization.

53297220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888299 (or 888297 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 53297220 is about 7300.4945037990. The cubic root of 53297220 is about 376.3294324996.

The spelling of 53297220 in words is "fifty-three million, two hundred ninety-seven thousand, two hundred twenty".