561705954 has 48 divisors (see below), whose sum is σ = 1206371712. Its totient is φ = 174217824.

The previous prime is 561705913. The next prime is 561705973. The reversal of 561705954 is 459507165.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115047 + ... + 119829.

It is an arithmetic number, because the mean of its divisors is an integer number (25132744).

Almost surely, 2^561705954 is an apocalyptic number.

561705954 is an abundant number, since it is smaller than the sum of its proper divisors (644665758).

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

561705954 is a wasteful number, since it uses less digits than its factorization.

561705954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 561705954 is about 23700.3365798885. The cubic root of 561705954 is about 825.0932023261.

The spelling of 561705954 in words is "five hundred sixty-one million, seven hundred five thousand, nine hundred fifty-four".