456530491 has 2 divisors, whose sum is σ = 456530492. Its totient is φ = 456530490.

The previous prime is 456530489. The next prime is 456530513. The reversal of 456530491 is 194035654.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 456530491 - 2¹ = 456530489 is a prime.

Together with 456530489, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 456530491.

It is not a weakly prime, because it can be changed into another prime (456530471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228265245 + 228265246.

It is an arithmetic number, because the mean of its divisors is an integer number (228265246).

Almost surely, 2^456530491 is an apocalyptic number.

456530491 is a deficient number, since it is larger than the sum of its proper divisors (1).

456530491 is an equidigital number, since it uses as much as digits as its factorization.

456530491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 456530491 is about 21366.5741521658. The cubic root of 456530491 is about 769.9985894167.

The spelling of 456530491 in words is "four hundred fifty-six million, five hundred thirty thousand, four hundred ninety-one".