56223647 has 2 divisors, whose sum is σ = 56223648. Its totient is φ = 56223646.

The previous prime is 56223623. The next prime is 56223649. The reversal of 56223647 is 74632265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56223647 - 2²² = 52029343 is a prime.

It is a super-2 number, since 2×56223647² = 6322196963961218, which contains 22 as substring.

Together with 56223649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56223649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28111823 + 28111824.

It is an arithmetic number, because the mean of its divisors is an integer number (28111824).

Almost surely, 2^56223647 is an apocalyptic number.

56223647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56223647 is an equidigital number, since it uses as much as digits as its factorization.

56223647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 56223647 is about 7498.2429275131. The cubic root of 56223647 is about 383.0948711390.

The spelling of 56223647 in words is "fifty-six million, two hundred twenty-three thousand, six hundred forty-seven".