53121406 has 16 divisors (see below), whose sum is σ = 85932000. Its totient is φ = 24483168.

The previous prime is 53121391. The next prime is 53121427. The reversal of 53121406 is 60412135.

It is a congruent number.

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, 33520 + ... + 35068.

It is an arithmetic number, because the mean of its divisors is an integer number (5370750).

Almost surely, 2^53121406 is an apocalyptic number.

53121406 is a deficient number, since it is larger than the sum of its proper divisors (32810594).

53121406 is a wasteful number, since it uses less digits than its factorization.

53121406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 53121406 is about 7288.4433180207. The cubic root of 53121406 is about 375.9151715607.

The spelling of 53121406 in words is "fifty-three million, one hundred twenty-one thousand, four hundred six".