2541800556 has 18 divisors (see below), whose sum is σ = 6425107052. Its totient is φ = 847266840.

The previous prime is 2541800531. The next prime is 2541800627. The reversal of 2541800556 is 6550081452.

2541800556 is a `hidden beast` number, since 25 + 4 + 1 + 80 + 0 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×2541800556³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 70605571 = 2541800556 / (2 + 5 + 4 + 1 + 8 + 0 + 0 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2541800556.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35302750 + ... + 35302821.

Almost surely, 2^2541800556 is an apocalyptic number.

It is an amenable number.

2541800556 is an abundant number, since it is smaller than the sum of its proper divisors (3883306496).

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

2541800556 is a wasteful number, since it uses less digits than its factorization.

2541800556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70605581 (or 70605576 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 2541800556 is about 50416.2727301414. The cubic root of 2541800556 is about 1364.7313145028.

The spelling of 2541800556 in words is "two billion, five hundred forty-one million, eight hundred thousand, five hundred fifty-six".