56457211 has 2 divisors, whose sum is σ = 56457212. Its totient is φ = 56457210.

The previous prime is 56457197. The next prime is 56457217. The reversal of 56457211 is 11275465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56457211 - 2⁷ = 56457083 is a prime.

It is not a weakly prime, because it can be changed into another prime (56457217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28228605 + 28228606.

It is an arithmetic number, because the mean of its divisors is an integer number (28228606).

Almost surely, 2^56457211 is an apocalyptic number.

56457211 is a deficient number, since it is larger than the sum of its proper divisors (1).

56457211 is an equidigital number, since it uses as much as digits as its factorization.

56457211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 56457211 is about 7513.8013681491. The cubic root of 56457211 is about 383.6246218669.

It can be divided in two parts, 564 and 57211, that added together give a palindrome (57775).

The spelling of 56457211 in words is "fifty-six million, four hundred fifty-seven thousand, two hundred eleven".