456563391 has 4 divisors (see below), whose sum is σ = 608751192. Its totient is φ = 304375592.

The previous prime is 456563377. The next prime is 456563423. The reversal of 456563391 is 193365654.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 456563391 - 2¹⁵ = 456530623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456563321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76093896 + ... + 76093901.

It is an arithmetic number, because the mean of its divisors is an integer number (152187798).

Almost surely, 2^456563391 is an apocalyptic number.

456563391 is a deficient number, since it is larger than the sum of its proper divisors (152187801).

456563391 is a wasteful number, since it uses less digits than its factorization.

456563391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152187800.

The product of its digits is 291600, while the sum is 42.

The square root of 456563391 is about 21367.3440324248. The cubic root of 456563391 is about 770.0170856950.

The spelling of 456563391 in words is "four hundred fifty-six million, five hundred sixty-three thousand, three hundred ninety-one".