53508231 has 48 divisors (see below), whose sum is σ = 95606784. Its totient is φ = 28138752.

The previous prime is 53508229. The next prime is 53508241. The reversal of 53508231 is 13280535.

It is not a de Polignac number, because 53508231 - 2¹ = 53508229 is a prime.

It is a super-2 number, since 2×53508231² = 5726261569498722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53508195 and 53508204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53508241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49806 + ... + 50868.

It is an arithmetic number, because the mean of its divisors is an integer number (1991808).

Almost surely, 2^53508231 is an apocalyptic number.

53508231 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53508231 is a deficient number, since it is larger than the sum of its proper divisors (42098553).

53508231 is a wasteful number, since it uses less digits than its factorization.

53508231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 53508231 is about 7314.9320571007. The cubic root of 53508231 is about 376.8254251103.

Adding to 53508231 its reverse (13280535), we get a palindrome (66788766).

The spelling of 53508231 in words is "fifty-three million, five hundred eight thousand, two hundred thirty-one".