564550854 has 48 divisors (see below), whose sum is σ = 1316475648. Its totient is φ = 160928208.

The previous prime is 564550843. The next prime is 564550871. The reversal of 564550854 is 458055465.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141207 + ... + 145149.

It is an arithmetic number, because the mean of its divisors is an integer number (27426576).

Almost surely, 2^564550854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564550854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658237824).

564550854 is an abundant number, since it is smaller than the sum of its proper divisors (751924794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

564550854 is a wasteful number, since it uses less digits than its factorization.

564550854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

The square root of 564550854 is about 23760.2789125044. The cubic root of 564550854 is about 826.4838207364.

The spelling of 564550854 in words is "five hundred sixty-four million, five hundred fifty thousand, eight hundred fifty-four".