561421006 has 16 divisors (see below), whose sum is σ = 899688960. Its totient is φ = 261965880.

The previous prime is 561421001. The next prime is 561421019. The reversal of 561421006 is 600124165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561421001) 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, 107710 + ... + 112801.

It is an arithmetic number, because the mean of its divisors is an integer number (56230560).

Almost surely, 2^561421006 is an apocalyptic number.

561421006 is a deficient number, since it is larger than the sum of its proper divisors (338267954).

561421006 is a wasteful number, since it uses less digits than its factorization.

561421006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220599.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 561421006 is about 23694.3243414958. The cubic root of 561421006 is about 824.9536581254.

The spelling of 561421006 in words is "five hundred sixty-one million, four hundred twenty-one thousand, six".