2499251 has 4 divisors (see below), whose sum is σ = 2579904. Its totient is φ = 2418600.

The previous prime is 2499247. The next prime is 2499253. The reversal of 2499251 is 1529942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1529942 = 2 ⋅764971.

It is a cyclic number.

It is not a de Polignac number, because 2499251 - 2² = 2499247 is a prime.

It is a super-2 number, since 2×2499251² = 12492511122002, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2499253) 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, 40280 + ... + 40341.

It is an arithmetic number, because the mean of its divisors is an integer number (644976).

2^2499251 is an apocalyptic number.

2499251 is a deficient number, since it is larger than the sum of its proper divisors (80653).

2499251 is an equidigital number, since it uses as much as digits as its factorization.

2499251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80652.

The product of its digits is 6480, while the sum is 32.

The square root of 2499251 is about 1580.9019577444. The cubic root of 2499251 is about 135.7073254840.

The spelling of 2499251 in words is "two million, four hundred ninety-nine thousand, two hundred fifty-one".