561435472 has 40 divisors (see below), whose sum is σ = 1240373736. Its totient is φ = 243879936.

The previous prime is 561435461. The next prime is 561435473. The reversal of 561435472 is 274534165.

It can be written as a sum of positive squares in 4 ways, for example, as 40500496 + 520934976 = 6364^2 + 22824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561435473) 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, 75853 + ... + 82924.

Almost surely, 2^561435472 is an apocalyptic number.

561435472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

561435472 is an abundant number, since it is smaller than the sum of its proper divisors (678938264).

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

561435472 is a wasteful number, since it uses less digits than its factorization.

561435472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158815 (or 158809 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 561435472 is about 23694.6296025070. The cubic root of 561435472 is about 824.9607435254.

The spelling of 561435472 in words is "five hundred sixty-one million, four hundred thirty-five thousand, four hundred seventy-two".