561450213 has 12 divisors (see below), whose sum is σ = 819014508. Its totient is φ = 370593600.

The previous prime is 561450193. The next prime is 561450257. The reversal of 561450213 is 312054165.

561450213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 531671364 + 29778849 = 23058^2 + 5457^2 .

It is not a de Polignac number, because 561450213 - 2¹² = 561446117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561450413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307920 + ... + 309737.

It is an arithmetic number, because the mean of its divisors is an integer number (68251209).

Almost surely, 2^561450213 is an apocalyptic number.

It is an amenable number.

561450213 is a deficient number, since it is larger than the sum of its proper divisors (257564295).

561450213 is a wasteful number, since it uses less digits than its factorization.

561450213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617764 (or 617761 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 561450213 is about 23694.9406625127. The cubic root of 561450213 is about 824.9679634943.

The spelling of 561450213 in words is "five hundred sixty-one million, four hundred fifty thousand, two hundred thirteen".