53172631 has 8 divisors (see below), whose sum is σ = 55116000. Its totient is φ = 51236640.

The previous prime is 53172599. The next prime is 53172653. The reversal of 53172631 is 13627135.

53172631 is nontrivially palindromic in base 3.

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 53172631 - 2⁵ = 53172599 is a prime.

It is a super-2 number, since 2×53172631² = 5654657374924322, 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 53172631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53172661) 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, 15841 + ... + 18901.

It is an arithmetic number, because the mean of its divisors is an integer number (6889500).

Almost surely, 2^53172631 is an apocalyptic number.

53172631 is a deficient number, since it is larger than the sum of its proper divisors (1943369).

53172631 is a wasteful number, since it uses less digits than its factorization.

53172631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

The product of its digits is 3780, while the sum is 28.

The square root of 53172631 is about 7291.9565961407. The cubic root of 53172631 is about 376.0359644752.

Adding to 53172631 its reverse (13627135), we get a palindrome (66799766).

The spelling of 53172631 in words is "fifty-three million, one hundred seventy-two thousand, six hundred thirty-one".