52206231 has 16 divisors (see below), whose sum is σ = 86784768. Its totient is φ = 27120000.

The previous prime is 52206211. The next prime is 52206239. The reversal of 52206231 is 13260225.

It is not a de Polignac number, because 52206231 - 2⁷ = 52206103 is a prime.

It is a super-2 number, since 2×52206231² = 5450981110450722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 52206198 and 52206207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52206239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112770 + ... + 113231.

It is an arithmetic number, because the mean of its divisors is an integer number (5424048).

Almost surely, 2^52206231 is an apocalyptic number.

52206231 is a deficient number, since it is larger than the sum of its proper divisors (34578537).

52206231 is a wasteful number, since it uses less digits than its factorization.

52206231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226022.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52206231 is about 7225.3879480620. The cubic root of 52206231 is about 373.7439003788.

Adding to 52206231 its reverse (13260225), we get a palindrome (65466456).

The spelling of 52206231 in words is "fifty-two million, two hundred six thousand, two hundred thirty-one".