53072138 has 16 divisors (see below), whose sum is σ = 91247040. Its totient is φ = 22678656.

The previous prime is 53072137. The next prime is 53072177. The reversal of 53072138 is 83127035.

It is a self number, because there is not a number n which added to its sum of digits gives 53072138.

It is not an unprimeable number, because it can be changed into a prime (53072137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 428 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (5702940).

Almost surely, 2^53072138 is an apocalyptic number.

53072138 is a deficient number, since it is larger than the sum of its proper divisors (38174902).

53072138 is a wasteful number, since it uses less digits than its factorization.

53072138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 53072138 is about 7285.0626627367. The cubic root of 53072138 is about 375.7989201363.

It can be divided in two parts, 530 and 72138, that multiplied together give a triangular number (38233140 = T₈₇₄₄).

The spelling of 53072138 in words is "fifty-three million, seventy-two thousand, one hundred thirty-eight".