53315540 has 24 divisors (see below), whose sum is σ = 112126560. Its totient is φ = 21295008.

The previous prime is 53315513. The next prime is 53315579. The reversal of 53315540 is 4551335.

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, 16151 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (4671940).

Almost surely, 2^53315540 is an apocalyptic number.

It is an amenable number.

53315540 is an abundant number, since it is smaller than the sum of its proper divisors (58811020).

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

53315540 is a wasteful number, since it uses less digits than its factorization.

53315540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911 (or 3909 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 53315540 is about 7301.7491055226. The cubic root of 53315540 is about 376.3725464770.

Adding to 53315540 its reverse (4551335), we get a palindrome (57866875).

The spelling of 53315540 in words is "fifty-three million, three hundred fifteen thousand, five hundred forty".