53105631 has 8 divisors (see below), whose sum is σ = 70993920. Its totient is φ = 35310552.

The previous prime is 53105623. The next prime is 53105659. The reversal of 53105631 is 13650135.

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

It is not a de Polignac number, because 53105631 - 2³ = 53105623 is a prime.

It is a super-2 number, since 2×53105631² = 5640416087816322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53105621) 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, 21961 + ... + 24258.

It is an arithmetic number, because the mean of its divisors is an integer number (8874240).

Almost surely, 2^53105631 is an apocalyptic number.

53105631 is a deficient number, since it is larger than the sum of its proper divisors (17888289).

53105631 is a wasteful number, since it uses less digits than its factorization.

53105631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46605.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 53105631 is about 7287.3610449874. The cubic root of 53105631 is about 375.8779571282.

Adding to 53105631 its reverse (13650135), we get a palindrome (66755766).

The spelling of 53105631 in words is "fifty-three million, one hundred five thousand, six hundred thirty-one".