2490581 has 8 divisors (see below), whose sum is σ = 2591904. Its totient is φ = 2391120.

The previous prime is 2490547. The next prime is 2490583. The reversal of 2490581 is 1850942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2490581 - 2¹⁸ = 2228437 is a prime.

It is a super-2 number, since 2×2490581² = 12405987435122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2666 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (323988).

2^2490581 is an apocalyptic number.

It is an amenable number.

2490581 is a deficient number, since it is larger than the sum of its proper divisors (101323).

2490581 is an equidigital number, since it uses as much as digits as its factorization.

2490581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2490581 is about 1578.1574699630. The cubic root of 2490581 is about 135.5502189912.

The spelling of 2490581 in words is "two million, four hundred ninety thousand, five hundred eighty-one".