53121256 has 8 divisors (see below), whose sum is σ = 99602370. Its totient is φ = 26560624.

The previous prime is 53121251. The next prime is 53121319. The reversal of 53121256 is 65212135.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 5924356 = 6870^2 + 2434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 53121256.

It is not an unprimeable number, because it can be changed into a prime (53121251) 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 as a sum of consecutive naturals, namely, 3320071 + ... + 3320086.

Almost surely, 2^53121256 is an apocalyptic number.

It is an amenable number.

53121256 is a deficient number, since it is larger than the sum of its proper divisors (46481114).

53121256 is a wasteful number, since it uses less digits than its factorization.

53121256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640163 (or 6640159 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 53121256 is about 7288.4330277502. The cubic root of 53121256 is about 375.9148177339.

The spelling of 53121256 in words is "fifty-three million, one hundred twenty-one thousand, two hundred fifty-six".