56206231 has 4 divisors (see below), whose sum is σ = 56240152. Its totient is φ = 56172312.

The previous prime is 56206223. The next prime is 56206247. The reversal of 56206231 is 13260265.

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 56206231 - 2³ = 56206223 is a prime.

It is a super-2 number, since 2×56206231² = 6318280806450722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56206196 and 56206205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56206211) 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, 14340 + ... + 17833.

It is an arithmetic number, because the mean of its divisors is an integer number (14060038).

Almost surely, 2^56206231 is an apocalyptic number.

56206231 is a deficient number, since it is larger than the sum of its proper divisors (33921).

56206231 is a wasteful number, since it uses less digits than its factorization.

56206231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33920.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56206231 is about 7497.0814988234. The cubic root of 56206231 is about 383.0553108611.

Adding to 56206231 its reverse (13260265), we get a palindrome (69466496).

The spelling of 56206231 in words is "fifty-six million, two hundred six thousand, two hundred thirty-one".