561155322 has 32 divisors (see below), whose sum is σ = 1381306752. Its totient is φ = 147996864.

The previous prime is 561155321. The next prime is 561155339. The reversal of 561155322 is 223551165.

It is a happy number.

561155322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 561155322.

It is not an unprimeable number, because it can be changed into a prime (561155321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513333 + ... + 514424.

It is an arithmetic number, because the mean of its divisors is an integer number (43165836).

Almost surely, 2^561155322 is an apocalyptic number.

561155322 is an abundant number, since it is smaller than the sum of its proper divisors (820151430).

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

561155322 is a wasteful number, since it uses less digits than its factorization.

561155322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027782.

The product of its digits is 9000, while the sum is 30.

The square root of 561155322 is about 23688.7171877246. The cubic root of 561155322 is about 824.8235053117.

The spelling of 561155322 in words is "five hundred sixty-one million, one hundred fifty-five thousand, three hundred twenty-two".