564441540 has 96 divisors (see below), whose sum is σ = 1730055936. Its totient is φ = 136650240.

The previous prime is 564441523. The next prime is 564441541. The reversal of 564441540 is 45144465.

It is not an unprimeable number, because it can be changed into a prime (564441541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41649 + ... + 53511.

It is an arithmetic number, because the mean of its divisors is an integer number (18021416).

Almost surely, 2^564441540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564441540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865027968).

564441540 is an abundant number, since it is smaller than the sum of its proper divisors (1165614396).

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

564441540 is a wasteful number, since it uses less digits than its factorization.

564441540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11949 (or 11947 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 564441540 is about 23757.9784493547. The cubic root of 564441540 is about 826.4304732635.

The spelling of 564441540 in words is "five hundred sixty-four million, four hundred forty-one thousand, five hundred forty".