561073212 has 72 divisors (see below), whose sum is σ = 1629965792. Its totient is φ = 159408000.

The previous prime is 561073207. The next prime is 561073213. The reversal of 561073212 is 212370165.

It is a happy number.

561073212 is a `hidden beast` number, since 5 + 610 + 7 + 32 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561073213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39462 + ... + 51762.

Almost surely, 2^561073212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561073212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814982896).

561073212 is an abundant number, since it is smaller than the sum of its proper divisors (1068892580).

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

561073212 is a wasteful number, since it uses less digits than its factorization.

561073212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12499 (or 12494 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 561073212 is about 23686.9840207655. The cubic root of 561073212 is about 824.7832730985.

It can be divided in two parts, 56107 and 3212, that added together give a cube (59319 = 39³).

The spelling of 561073212 in words is "five hundred sixty-one million, seventy-three thousand, two hundred twelve".