53121045 has 32 divisors (see below), whose sum is σ = 87552000. Its totient is φ = 27489600.

The previous prime is 53121043. The next prime is 53121049. The reversal of 53121045 is 54012135.

It is not a de Polignac number, because 53121045 - 2¹ = 53121043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106206 + ... + 106704.

It is an arithmetic number, because the mean of its divisors is an integer number (2736000).

Almost surely, 2^53121045 is an apocalyptic number.

It is an amenable number.

53121045 is a deficient number, since it is larger than the sum of its proper divisors (34430955).

53121045 is a wasteful number, since it uses less digits than its factorization.

53121045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 53121045 is about 7288.4185527452. The cubic root of 53121045 is about 375.9143200164.

The spelling of 53121045 in words is "fifty-three million, one hundred twenty-one thousand, forty-five".