53320836 has 12 divisors (see below), whose sum is σ = 124415312. Its totient is φ = 17773608.

The previous prime is 53320819. The next prime is 53320847. The reversal of 53320836 is 63802335.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×53320836² = 5686223103477792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2221690 + ... + 2221713.

Almost surely, 2^53320836 is an apocalyptic number.

It is an amenable number.

53320836 is an abundant number, since it is smaller than the sum of its proper divisors (71094476).

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

53320836 is a wasteful number, since it uses less digits than its factorization.

53320836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443410 (or 4443408 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 53320836 is about 7302.1117493503. Note that the first 3 decimals coincide. The cubic root of 53320836 is about 376.3850081533.

The spelling of 53320836 in words is "fifty-three million, three hundred twenty thousand, eight hundred thirty-six".