456544561 has 4 divisors (see below), whose sum is σ = 498048624. Its totient is φ = 415040500.

The previous prime is 456544489. The next prime is 456544573. The reversal of 456544561 is 165445654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 456544561 - 2¹³ = 456536369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (456544261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20752015 + ... + 20752036.

It is an arithmetic number, because the mean of its divisors is an integer number (124512156).

Almost surely, 2^456544561 is an apocalyptic number.

It is an amenable number.

456544561 is a deficient number, since it is larger than the sum of its proper divisors (41504063).

456544561 is a wasteful number, since it uses less digits than its factorization.

456544561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41504062.

The product of its digits is 288000, while the sum is 40.

The square root of 456544561 is about 21366.9034022247. The cubic root of 456544561 is about 770.0064996359.

It can be divided in two parts, 4 and 56544561, that added together give a palindrome (56544565).

The spelling of 456544561 in words is "four hundred fifty-six million, five hundred forty-four thousand, five hundred sixty-one".