53317631 has 8 divisors (see below), whose sum is σ = 55237680. Its totient is φ = 51403072.

The previous prime is 53317619. The next prime is 53317637. The reversal of 53317631 is 13671335.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53317631 is a prime.

It is a super-2 number, since 2×53317631² = 5685539550904322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53317594 and 53317603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53317637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36491 + ... + 37923.

It is an arithmetic number, because the mean of its divisors is an integer number (6904710).

Almost surely, 2^53317631 is an apocalyptic number.

53317631 is a deficient number, since it is larger than the sum of its proper divisors (1920049).

53317631 is a wasteful number, since it uses less digits than its factorization.

53317631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its digits is 5670, while the sum is 29.

The square root of 53317631 is about 7301.8922889892. The cubic root of 53317631 is about 376.3774667729.

Adding to 53317631 its reverse (13671335), we get a palindrome (66988966).

The spelling of 53317631 in words is "fifty-three million, three hundred seventeen thousand, six hundred thirty-one".