2502981 has 20 divisors (see below), whose sum is σ = 4028332. Its totient is φ = 1539648.

The previous prime is 2502953. The next prime is 2502991. The reversal of 2502981 is 1892052.

It can be written as a sum of positive squares in 2 ways, for example, as 656100 + 1846881 = 810^2 + 1359^2 .

It is not a de Polignac number, because 2502981 - 2⁶ = 2502917 is a prime.

It is a super-2 number, since 2×2502981² = 12529827772722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2502981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502931) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136 + ... + 2241.

2^2502981 is an apocalyptic number.

It is an amenable number.

2502981 is a deficient number, since it is larger than the sum of its proper divisors (1525351).

2502981 is a wasteful number, since it uses less digits than its factorization.

2502981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2502981 is about 1582.0812242107. The cubic root of 2502981 is about 135.7748039289.

The spelling of 2502981 in words is "two million, five hundred two thousand, nine hundred eighty-one".