2261441556 has 36 divisors (see below), whose sum is σ = 6236097504. Its totient is φ = 685285200.

The previous prime is 2261441461. The next prime is 2261441563. The reversal of 2261441556 is 6551441622.

2261441556 is a `hidden beast` number, since 2 + 2 + 61 + 4 + 41 + 556 = 666.

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

It is a super-2 number, since 2×2261441556² = 10228235822407402272, which contains 22 as substring.

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 2261441556.

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, 2854960 + ... + 2855751.

Almost surely, 2^2261441556 is an apocalyptic number.

It is an amenable number.

2261441556 is an abundant number, since it is smaller than the sum of its proper divisors (3974655948).

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

2261441556 is a wasteful number, since it uses less digits than its factorization.

2261441556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710732 (or 5710727 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2261441556 is about 47554.6165582270. The cubic root of 2261441556 is about 1312.5880805106.

The spelling of 2261441556 in words is "two billion, two hundred sixty-one million, four hundred forty-one thousand, five hundred fifty-six".