53120816 has 40 divisors (see below), whose sum is σ = 119397120. Its totient is φ = 22423104.

The previous prime is 53120803. The next prime is 53120831. The reversal of 53120816 is 61802135.

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, 3965 + ... + 11043.

It is an arithmetic number, because the mean of its divisors is an integer number (2984928).

Almost surely, 2^53120816 is an apocalyptic number.

53120816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53120816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59698560).

53120816 is an abundant number, since it is smaller than the sum of its proper divisors (66276304).

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

53120816 is a wasteful number, since it uses less digits than its factorization.

53120816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7161 (or 7155 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 53120816 is about 7288.4028428731. The cubic root of 53120816 is about 375.9137798381.

The spelling of 53120816 in words is "fifty-three million, one hundred twenty thousand, eight hundred sixteen".