561262356 has 36 divisors (see below), whose sum is σ = 1493419200. Its totient is φ = 177240528.

The previous prime is 561262333. The next prime is 561262363. The reversal of 561262356 is 653262165.

It is a happy number.

561262356 is a `hidden beast` number, since 5 + 612 + 6 + 2 + 35 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 561262356.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 409596 + ... + 410963.

Almost surely, 2^561262356 is an apocalyptic number.

It is an amenable number.

561262356 is an abundant number, since it is smaller than the sum of its proper divisors (932156844).

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

561262356 is a wasteful number, since it uses less digits than its factorization.

561262356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820588 (or 820583 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 561262356 is about 23690.9762567945. The cubic root of 561262356 is about 824.8759438809.

The spelling of 561262356 in words is "five hundred sixty-one million, two hundred sixty-two thousand, three hundred fifty-six".