53315816 has 32 divisors (see below), whose sum is σ = 103195080. Its totient is φ = 25804800.

The previous prime is 53315809. The next prime is 53315819. The reversal of 53315816 is 61851335.

It can be written as a sum of positive squares in 4 ways, for example, as 51984100 + 1331716 = 7210^2 + 1154^2 .

It is not an unprimeable number, because it can be changed into a prime (53315819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82856 + ... + 83496.

Almost surely, 2^53315816 is an apocalyptic number.

It is an amenable number.

53315816 is a deficient number, since it is larger than the sum of its proper divisors (49879264).

53315816 is a wasteful number, since it uses less digits than its factorization.

53315816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 961 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 53315816 is about 7301.7680050793. The cubic root of 53315816 is about 376.3731959352.

The spelling of 53315816 in words is "fifty-three million, three hundred fifteen thousand, eight hundred sixteen".