56217443 has 2 divisors, whose sum is σ = 56217444. Its totient is φ = 56217442.

The previous prime is 56217433. The next prime is 56217527. The reversal of 56217443 is 34471265.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56217443 - 2⁶ = 56217379 is a prime.

It is not a weakly prime, because it can be changed into another prime (56217433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28108721 + 28108722.

It is an arithmetic number, because the mean of its divisors is an integer number (28108722).

Almost surely, 2^56217443 is an apocalyptic number.

56217443 is a deficient number, since it is larger than the sum of its proper divisors (1).

56217443 is an equidigital number, since it uses as much as digits as its factorization.

56217443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 56217443 is about 7497.8292191807. The cubic root of 56217443 is about 383.0807797491.

The spelling of 56217443 in words is "fifty-six million, two hundred seventeen thousand, four hundred forty-three".