53397072 has 30 divisors (see below), whose sum is σ = 149438042. Its totient is φ = 17798976.

The previous prime is 53397067. The next prime is 53397079. The reversal of 53397072 is 27079335.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 3779136 = 7044^2 + 1944^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53397079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185263 + ... + 185550.

Almost surely, 2^53397072 is an apocalyptic number.

It is an amenable number.

53397072 is an abundant number, since it is smaller than the sum of its proper divisors (96040970).

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

53397072 is a wasteful number, since it uses less digits than its factorization.

53397072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370827 (or 370818 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 53397072 is about 7307.3300185499. The cubic root of 53397072 is about 376.5643028110.

The spelling of 53397072 in words is "fifty-three million, three hundred ninety-seven thousand, seventy-two".