53017231 has 8 divisors (see below), whose sum is σ = 55607904. Its totient is φ = 50450400.

The previous prime is 53017213. The next prime is 53017259. The reversal of 53017231 is 13271035.

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-53017231 is a prime.

It is a super-2 number, since 2×53017231² = 5621653565814722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53017291) 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, 1320 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (6950988).

Almost surely, 2^53017231 is an apocalyptic number.

53017231 is a deficient number, since it is larger than the sum of its proper divisors (2590673).

53017231 is a wasteful number, since it uses less digits than its factorization.

53017231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11921.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 53017231 is about 7281.2932230477. The cubic root of 53017231 is about 375.6692782817.

Adding to 53017231 its reverse (13271035), we get a palindrome (66288266).

The spelling of 53017231 in words is "fifty-three million, seventeen thousand, two hundred thirty-one".