561084901 has 6 divisors (see below), whose sum is σ = 607565490. Its totient is φ = 517924368.

The previous prime is 561084899. The next prime is 561084911. The reversal of 561084901 is 109480165.

It can be written as a sum of positive squares in 3 ways, for example, as 1052676 + 560032225 = 1026^2 + 23665^2 .

It is not a de Polignac number, because 561084901 - 2¹ = 561084899 is a prime.

It is a super-2 number, since 2×561084901² = 629632532260359602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561084911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1659846 + ... + 1660183.

It is an arithmetic number, because the mean of its divisors is an integer number (101260915).

Almost surely, 2^561084901 is an apocalyptic number.

It is an amenable number.

561084901 is a deficient number, since it is larger than the sum of its proper divisors (46480589).

561084901 is a wasteful number, since it uses less digits than its factorization.

561084901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320055 (or 3320042 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 561084901 is about 23687.2307583643. The cubic root of 561084901 is about 824.7890007080.

It can be divided in two parts, 56108 and 4901, that added together give a square (61009 = 247²).

The spelling of 561084901 in words is "five hundred sixty-one million, eighty-four thousand, nine hundred one".