53111408 has 40 divisors (see below), whose sum is σ = 119278080. Its totient is φ = 22438080.

The previous prime is 53111389. The next prime is 53111423. The reversal of 53111408 is 80411135.

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, 4613 + ... + 11291.

It is an arithmetic number, because the mean of its divisors is an integer number (2981952).

Almost surely, 2^53111408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53111408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59639040).

53111408 is an abundant number, since it is smaller than the sum of its proper divisors (66166672).

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

53111408 is a wasteful number, since it uses less digits than its factorization.

53111408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765 (or 6759 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 53111408 is about 7287.7574054026. The cubic root of 53111408 is about 375.8915863685.

The spelling of 53111408 in words is "fifty-three million, one hundred eleven thousand, four hundred eight".