2252981 has 4 divisors (see below), whose sum is σ = 2330700. Its totient is φ = 2175264.

The previous prime is 2252953. The next prime is 2252983. The reversal of 2252981 is 1892522.

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 1380625 + 872356 = 1175^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 2252981 - 2⁶ = 2252917 is a prime.

It is a super-2 number, since 2×2252981² = 10151846772722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 77689 = 2252981 / (2 + 2 + 5 + 2 + 9 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252983) 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, 38816 + ... + 38873.

It is an arithmetic number, because the mean of its divisors is an integer number (582675).

2^2252981 is an apocalyptic number.

It is an amenable number.

2252981 is a deficient number, since it is larger than the sum of its proper divisors (77719).

2252981 is an equidigital number, since it uses as much as digits as its factorization.

2252981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77718.

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

The square root of 2252981 is about 1500.9933377600. The cubic root of 2252981 is about 131.0949140248.

The spelling of 2252981 in words is "two million, two hundred fifty-two thousand, nine hundred eighty-one".