2492981 has 4 divisors (see below), whose sum is σ = 2506092. Its totient is φ = 2479872.

The previous prime is 2492957. The next prime is 2493019. The reversal of 2492981 is 1892942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 1522756 = 985^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492981 - 2¹⁴ = 2476597 is a prime.

It is a super-2 number, since 2×2492981² = 12429908532722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2492951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6266 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (626523).

2^2492981 is an apocalyptic number.

It is an amenable number.

2492981 is a deficient number, since it is larger than the sum of its proper divisors (13111).

2492981 is a wasteful number, since it uses less digits than its factorization.

2492981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13110.

The product of its digits is 10368, while the sum is 35.

The square root of 2492981 is about 1578.9176672645. The cubic root of 2492981 is about 135.5937451250.

The spelling of 2492981 in words is "two million, four hundred ninety-two thousand, nine hundred eighty-one".