565520164 has 24 divisors (see below), whose sum is σ = 1143138528. Its totient is φ = 241933440.

The previous prime is 565520143. The next prime is 565520167. The reversal of 565520164 is 461025565.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (565520167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377274 + ... + 378769.

It is an arithmetic number, because the mean of its divisors is an integer number (47630772).

Almost surely, 2^565520164 is an apocalyptic number.

It is an amenable number.

565520164 is an abundant number, since it is smaller than the sum of its proper divisors (577618364).

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

565520164 is a wasteful number, since it uses less digits than its factorization.

565520164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756075 (or 756073 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 565520164 is about 23780.6678627830. The cubic root of 565520164 is about 826.9565628981.

The spelling of 565520164 in words is "five hundred sixty-five million, five hundred twenty thousand, one hundred sixty-four".