53117604 has 18 divisors (see below), whose sum is σ = 134269590. Its totient is φ = 17705856.

The previous prime is 53117579. The next prime is 53117609. The reversal of 53117604 is 40671135.

53117604 is a `hidden beast` number, since 53 + 1 + 1 + 7 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 3415104 = 7050^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (53117609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737709 + ... + 737780.

Almost surely, 2^53117604 is an apocalyptic number.

It is an amenable number.

53117604 is an abundant number, since it is smaller than the sum of its proper divisors (81151986).

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

53117604 is a wasteful number, since it uses less digits than its factorization.

53117604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475499 (or 1475494 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 53117604 is about 7288.1824894825. The cubic root of 53117604 is about 375.9062030256.

Adding to 53117604 its reverse (40671135), we get a palindrome (93788739).

The spelling of 53117604 in words is "fifty-three million, one hundred seventeen thousand, six hundred four".