53315531 has 8 divisors (see below), whose sum is σ = 54665280. Its totient is φ = 51974848.

The previous prime is 53315513. The next prime is 53315579. The reversal of 53315531 is 13551335.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53315531 - 2⁶ = 53315467 is a prime.

It is a super-2 number, since 2×53315531² = 5685091691623922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53315531.

It is not an unprimeable number, because it can be changed into a prime (53317531) 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, 10535 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (6833160).

Almost surely, 2^53315531 is an apocalyptic number.

53315531 is a deficient number, since it is larger than the sum of its proper divisors (1349749).

53315531 is a wasteful number, since it uses less digits than its factorization.

53315531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533.

The product of its digits is 3375, while the sum is 26.

The square root of 53315531 is about 7301.7484892319. The cubic root of 53315531 is about 376.3725252989.

Adding to 53315531 its reverse (13551335), we get a palindrome (66866866).

The spelling of 53315531 in words is "fifty-three million, three hundred fifteen thousand, five hundred thirty-one".