2621249 has 4 divisors (see below), whose sum is σ = 2658240. Its totient is φ = 2584260.

The previous prime is 2621239. The next prime is 2621257. The reversal of 2621249 is 9421262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2621219) 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, 18389 + ... + 18530.

It is an arithmetic number, because the mean of its divisors is an integer number (664560).

2^2621249 is an apocalyptic number.

It is an amenable number.

2621249 is a deficient number, since it is larger than the sum of its proper divisors (36991).

2621249 is an equidigital number, since it uses as much as digits as its factorization.

2621249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36990.

The product of its digits is 1728, while the sum is 26.

The square root of 2621249 is about 1619.0271770418. The cubic root of 2621249 is about 137.8804713093.

The spelling of 2621249 in words is "two million, six hundred twenty-one thousand, two hundred forty-nine".