2521249 has 2 divisors, whose sum is σ = 2521250. Its totient is φ = 2521248.

The previous prime is 2521223. The next prime is 2521271. The reversal of 2521249 is 9421252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 1140624 = 1175^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521249 - 2¹³ = 2513057 is a prime.

2521249 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2521949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260624 + 1260625.

It is an arithmetic number, because the mean of its divisors is an integer number (1260625).

2^2521249 is an apocalyptic number.

It is an amenable number.

2521249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521249 is an equidigital number, since it uses as much as digits as its factorization.

2521249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 2521249 is about 1587.8441359277. The cubic root of 2521249 is about 136.1043209101.

The spelling of 2521249 in words is "two million, five hundred twenty-one thousand, two hundred forty-nine".