52133231 has 4 divisors (see below), whose sum is σ = 52222632. Its totient is φ = 52043832.

The previous prime is 52133183. The next prime is 52133233. The reversal of 52133231 is 13233125.

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

It is a cyclic number.

It is not a de Polignac number, because 52133231 - 2¹⁰ = 52132207 is a prime.

It is a super-2 number, since 2×52133231² = 5435747548998722, 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 (52133233) 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, 43820 + ... + 44993.

It is an arithmetic number, because the mean of its divisors is an integer number (13055658).

Almost surely, 2^52133231 is an apocalyptic number.

52133231 is a deficient number, since it is larger than the sum of its proper divisors (89401).

52133231 is an equidigital number, since it uses as much as digits as its factorization.

52133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89400.

The product of its digits is 540, while the sum is 20.

The square root of 52133231 is about 7220.3345490358. The cubic root of 52133231 is about 373.5696170232.

Adding to 52133231 its reverse (13233125), we get a palindrome (65366356).

The spelling of 52133231 in words is "fifty-two million, one hundred thirty-three thousand, two hundred thirty-one".