2461581 has 12 divisors (see below), whose sum is σ = 3569280. Its totient is φ = 1634760.

The previous prime is 2461579. The next prime is 2461601. The reversal of 2461581 is 1851642.

2461581 is a `hidden beast` number, since 24 + 61 + 581 = 666.

It is not a de Polignac number, because 2461581 - 2¹ = 2461579 is a prime.

It is a super-2 number, since 2×2461581² = 12118762039122, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2460581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4026 + ... + 4596.

It is an arithmetic number, because the mean of its divisors is an integer number (297440).

2^2461581 is an apocalyptic number.

It is an amenable number.

2461581 is a deficient number, since it is larger than the sum of its proper divisors (1107699).

2461581 is a wasteful number, since it uses less digits than its factorization.

2461581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1053 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2461581 is about 1568.9426375747. The cubic root of 2461581 is about 135.0220540102.

The spelling of 2461581 in words is "two million, four hundred sixty-one thousand, five hundred eighty-one".