56766223 has 2 divisors, whose sum is σ = 56766224. Its totient is φ = 56766222.

The previous prime is 56766221. The next prime is 56766289. The reversal of 56766223 is 32266765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56766223 - 2¹ = 56766221 is a prime.

Together with 56766221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56766221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28383111 + 28383112.

It is an arithmetic number, because the mean of its divisors is an integer number (28383112).

Almost surely, 2^56766223 is an apocalyptic number.

56766223 is a deficient number, since it is larger than the sum of its proper divisors (1).

56766223 is an equidigital number, since it uses as much as digits as its factorization.

56766223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 56766223 is about 7534.3362680464. The cubic root of 56766223 is about 384.3232570797.

The spelling of 56766223 in words is "fifty-six million, seven hundred sixty-six thousand, two hundred twenty-three".