561997046 has 16 divisors (see below), whose sum is σ = 916659744. Its totient is φ = 256863744.

The previous prime is 561997031. The next prime is 561997049. The reversal of 561997046 is 640799165.

It is a super-2 number, since 2×561997046² = 631681359425452232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561997049) 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, 102251 + ... + 107606.

It is an arithmetic number, because the mean of its divisors is an integer number (57291234).

Almost surely, 2^561997046 is an apocalyptic number.

561997046 is a deficient number, since it is larger than the sum of its proper divisors (354662698).

561997046 is a wasteful number, since it uses less digits than its factorization.

561997046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209975.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 561997046 is about 23706.4768786929. The cubic root of 561997046 is about 825.2357066333.

The spelling of 561997046 in words is "five hundred sixty-one million, nine hundred ninety-seven thousand, forty-six".