564623555 has 4 divisors (see below), whose sum is σ = 677548272. Its totient is φ = 451698840.

The previous prime is 564623489. The next prime is 564623561. The reversal of 564623555 is 555326465.

564623555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555326465 = 5 ⋅111065293.

It is a de Polignac number, because none of the positive numbers 2^k-564623555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56462351 + ... + 56462360.

It is an arithmetic number, because the mean of its divisors is an integer number (169387068).

Almost surely, 2^564623555 is an apocalyptic number.

564623555 is a deficient number, since it is larger than the sum of its proper divisors (112924717).

564623555 is a wasteful number, since it uses less digits than its factorization.

564623555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112924716.

The product of its digits is 540000, while the sum is 41.

The square root of 564623555 is about 23761.8087484939. The cubic root of 564623555 is about 826.5192965020.

The spelling of 564623555 in words is "five hundred sixty-four million, six hundred twenty-three thousand, five hundred fifty-five".