52140231 has 72 divisors (see below), whose sum is σ = 92951040. Its totient is φ = 27941760.

The previous prime is 52140211. The next prime is 52140293. The reversal of 52140231 is 13204125.

It is not a de Polignac number, because 52140231 - 2¹⁰ = 52139207 is a prime.

It is a super-2 number, since 2×52140231² = 5437207377466722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52140211) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 410490 + ... + 410616.

Almost surely, 2^52140231 is an apocalyptic number.

52140231 is a deficient number, since it is larger than the sum of its proper divisors (40810809).

52140231 is a wasteful number, since it uses less digits than its factorization.

52140231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 52140231 is about 7220.8192748469. The cubic root of 52140231 is about 373.5863361755.

Adding to 52140231 its reverse (13204125), we get a palindrome (65344356).

The spelling of 52140231 in words is "fifty-two million, one hundred forty thousand, two hundred thirty-one".