53212631 has 4 divisors (see below), whose sum is σ = 54114600. Its totient is φ = 52310664.

The previous prime is 53212603. The next prime is 53212657. The reversal of 53212631 is 13621235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53212631 is a prime.

It is a super-2 number, since 2×53212631² = 5663168195884322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53212597 and 53212606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53212231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450896 + ... + 451013.

It is an arithmetic number, because the mean of its divisors is an integer number (13528650).

Almost surely, 2^53212631 is an apocalyptic number.

53212631 is a deficient number, since it is larger than the sum of its proper divisors (901969).

53212631 is an equidigital number, since it uses as much as digits as its factorization.

53212631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901968.

The product of its digits is 1080, while the sum is 23.

The square root of 53212631 is about 7294.6988286015. The cubic root of 53212631 is about 376.1302339528.

Adding to 53212631 its reverse (13621235), we get a palindrome (66833866).

The spelling of 53212631 in words is "fifty-three million, two hundred twelve thousand, six hundred thirty-one".