56225231 has 2 divisors, whose sum is σ = 56225232. Its totient is φ = 56225230.

The previous prime is 56225203. The next prime is 56225233. The reversal of 56225231 is 13252265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56225231 - 2¹⁴ = 56208847 is a prime.

It is a super-2 number, since 2×56225231² = 6322553202006722, which contains 22 as substring.

Together with 56225233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56225231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56225233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28112615 + 28112616.

It is an arithmetic number, because the mean of its divisors is an integer number (28112616).

Almost surely, 2^56225231 is an apocalyptic number.

56225231 is a deficient number, since it is larger than the sum of its proper divisors (1).

56225231 is an equidigital number, since it uses as much as digits as its factorization.

56225231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 56225231 is about 7498.3485515145. The cubic root of 56225231 is about 383.0984687746.

Adding to 56225231 its reverse (13252265), we get a palindrome (69477496).

The spelling of 56225231 in words is "fifty-six million, two hundred twenty-five thousand, two hundred thirty-one".