561552705 has 48 divisors (see below), whose sum is σ = 1160789760. Its totient is φ = 245545344.

The previous prime is 561552689. The next prime is 561552707. The reversal of 561552705 is 507255165.

It is a happy number.

It is not a de Polignac number, because 561552705 - 2⁴ = 561552689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561552705.

It is not an unprimeable number, because it can be changed into a prime (561552707) 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 47 ways as a sum of consecutive naturals, for example, 31510 + ... + 45999.

It is an arithmetic number, because the mean of its divisors is an integer number (24183120).

Almost surely, 2^561552705 is an apocalyptic number.

It is an amenable number.

561552705 is an abundant number, since it is smaller than the sum of its proper divisors (599237055).

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

561552705 is a wasteful number, since it uses less digits than its factorization.

561552705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77550 (or 77547 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 561552705 is about 23697.1033039906. The cubic root of 561552705 is about 825.0181593799.

The spelling of 561552705 in words is "five hundred sixty-one million, five hundred fifty-two thousand, seven hundred five".