2529981 has 8 divisors (see below), whose sum is σ = 3748160. Its totient is φ = 1686636.

The previous prime is 2529971. The next prime is 2529997. The reversal of 2529981 is 1899252.

It is not a de Polignac number, because 2529981 - 2¹¹ = 2527933 is a prime.

It is a super-2 number, since 2×2529981² = 12801607720722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2529911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46825 + ... + 46878.

It is an arithmetic number, because the mean of its divisors is an integer number (468520).

2^2529981 is an apocalyptic number.

It is an amenable number.

2529981 is a deficient number, since it is larger than the sum of its proper divisors (1218179).

2529981 is an equidigital number, since it uses as much as digits as its factorization.

2529981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93712 (or 93706 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2529981 is about 1590.5913994486. The cubic root of 2529981 is about 136.2612660774.

The spelling of 2529981 in words is "two million, five hundred twenty-nine thousand, nine hundred eighty-one".