561021162 has 16 divisors (see below), whose sum is σ = 1208353440. Its totient is φ = 172621872.

The previous prime is 561021143. The next prime is 561021239. The reversal of 561021162 is 261120165.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3596212 + ... + 3596367.

It is an arithmetic number, because the mean of its divisors is an integer number (75522090).

Almost surely, 2^561021162 is an apocalyptic number.

561021162 is an abundant number, since it is smaller than the sum of its proper divisors (647332278).

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

561021162 is a wasteful number, since it uses less digits than its factorization.

561021162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7192597.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 561021162 is about 23685.8852906114. The cubic root of 561021162 is about 824.7577676351.

The spelling of 561021162 in words is "five hundred sixty-one million, twenty-one thousand, one hundred sixty-two".