561156246 has 24 divisors (see below), whose sum is σ = 1389530064. Its totient is φ = 160330320.

The previous prime is 561156227. The next prime is 561156251. The reversal of 561156246 is 642651165.

561156246 is a `hidden beast` number, since 56 + 1 + 1 + 562 + 46 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 561156246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2226685 + ... + 2226936.

It is an arithmetic number, because the mean of its divisors is an integer number (57897086).

Almost surely, 2^561156246 is an apocalyptic number.

561156246 is an abundant number, since it is smaller than the sum of its proper divisors (828373818).

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

561156246 is a wasteful number, since it uses less digits than its factorization.

561156246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453636 (or 4453633 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 561156246 is about 23688.7366906722. The cubic root of 561156246 is about 824.8239580304.

It can be divided in two parts, 5611562 and 46, that multiplied together give a palindrome (258131852).

The spelling of 561156246 in words is "five hundred sixty-one million, one hundred fifty-six thousand, two hundred forty-six".