53717631 has 8 divisors (see below), whose sum is σ = 78134784. Its totient is φ = 32556120.

The previous prime is 53717611. The next prime is 53717633. The reversal of 53717631 is 13671735.

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

It is not a de Polignac number, because 53717631 - 2⁹ = 53717119 is a prime.

It is a super-2 number, since 2×53717631² = 5771167760504322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1627807 = 53717631 / (5 + 3 + 7 + 1 + 7 + 6 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 53717592 and 53717601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53717633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813871 + ... + 813936.

It is an arithmetic number, because the mean of its divisors is an integer number (9766848).

Almost surely, 2^53717631 is an apocalyptic number.

53717631 is a deficient number, since it is larger than the sum of its proper divisors (24417153).

53717631 is a wasteful number, since it uses less digits than its factorization.

53717631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627821.

The product of its digits is 13230, while the sum is 33.

The square root of 53717631 is about 7329.2312693761. The cubic root of 53717631 is about 377.3163435693.

The spelling of 53717631 in words is "fifty-three million, seven hundred seventeen thousand, six hundred thirty-one".