561045436 has 12 divisors (see below), whose sum is σ = 1122090928. Its totient is φ = 240448032.

The previous prime is 561045431. The next prime is 561045469. The reversal of 561045436 is 634540165.

561045436 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561045431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10018641 + ... + 10018696.

Almost surely, 2^561045436 is an apocalyptic number.

It is an amenable number.

561045436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

561045436 is a wasteful number, since it uses less digits than its factorization.

561045436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037348 (or 20037346 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 561045436 is about 23686.3976999458. The cubic root of 561045436 is about 824.7696625407.

The spelling of 561045436 in words is "five hundred sixty-one million, forty-five thousand, four hundred thirty-six".