53111808 has 176 divisors, whose sum is σ = 168017760. Its totient is φ = 16515072.

The previous prime is 53111803. The next prime is 53111809. The reversal of 53111808 is 80811135.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53111803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469960 + ... + 470072.

Almost surely, 2^53111808 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 53111808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84008880).

53111808 is an abundant number, since it is smaller than the sum of its proper divisors (114905952).

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

53111808 is a wasteful number, since it uses less digits than its factorization.

53111808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 53111808 is about 7287.7848486354. The cubic root of 53111808 is about 375.8925300218.

The spelling of 53111808 in words is "fifty-three million, one hundred eleven thousand, eight hundred eight".