561426160 has 40 divisors (see below), whose sum is σ = 1340601696. Its totient is φ = 218499840.

The previous prime is 561426121. The next prime is 561426169. The reversal of 561426160 is 61624165.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561426169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91876 + ... + 97795.

Almost surely, 2^561426160 is an apocalyptic number.

It is an amenable number.

561426160 is an abundant number, since it is smaller than the sum of its proper divisors (779175536).

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

561426160 is a wasteful number, since it uses less digits than its factorization.

561426160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189721 (or 189715 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 561426160 is about 23694.4331014692. The cubic root of 561426160 is about 824.9561825519.

The spelling of 561426160 in words is "five hundred sixty-one million, four hundred twenty-six thousand, one hundred sixty".