2722499 has 16 divisors (see below), whose sum is σ = 3161088. Its totient is φ = 2322432.

The previous prime is 2722477. The next prime is 2722507. The reversal of 2722499 is 9942272.

It is a happy number.

It is a Cunningham number, because it is equal to 1650²-1.

It is a cyclic number.

It is not a de Polignac number, because 2722499 - 2²⁰ = 1673923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21374 + ... + 21500.

It is an arithmetic number, because the mean of its divisors is an integer number (197568).

2^2722499 is an apocalyptic number.

2722499 is a deficient number, since it is larger than the sum of its proper divisors (438589).

2722499 is a wasteful number, since it uses less digits than its factorization.

2722499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its digits is 18144, while the sum is 35.

The square root of 2722499 is about 1649.9996969697. Note that the first 3 decimals coincide. The cubic root of 2722499 is about 139.6333774866.

The spelling of 2722499 in words is "two million, seven hundred twenty-two thousand, four hundred ninety-nine".