56842231 has 2 divisors, whose sum is σ = 56842232. Its totient is φ = 56842230.

The previous prime is 56842229. The next prime is 56842241. The reversal of 56842231 is 13224865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56842231 - 2¹ = 56842229 is a prime.

It is a super-2 number, since 2×56842231² = 6462078450114722, which contains 22 as substring.

Together with 56842229, it forms a pair of twin primes.

It is equal to p_3385651 and since 56842231 and 3385651 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 56842193 and 56842202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56842211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28421115 + 28421116.

It is an arithmetic number, because the mean of its divisors is an integer number (28421116).

Almost surely, 2^56842231 is an apocalyptic number.

56842231 is a deficient number, since it is larger than the sum of its proper divisors (1).

56842231 is an equidigital number, since it uses as much as digits as its factorization.

56842231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 56842231 is about 7539.3786879291. The cubic root of 56842231 is about 384.4947124069.

The spelling of 56842231 in words is "fifty-six million, eight hundred forty-two thousand, two hundred thirty-one".