2551273 has 2 divisors, whose sum is σ = 2551274. Its totient is φ = 2551272.

The previous prime is 2551249. The next prime is 2551279. The reversal of 2551273 is 3721552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2471184 + 80089 = 1572^2 + 283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551273 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2551279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275636 + 1275637.

It is an arithmetic number, because the mean of its divisors is an integer number (1275637).

2^2551273 is an apocalyptic number.

It is an amenable number.

2551273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551273 is an equidigital number, since it uses as much as digits as its factorization.

2551273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 2551273 is about 1597.2704842950. The cubic root of 2551273 is about 136.6424512586.

The spelling of 2551273 in words is "two million, five hundred fifty-one thousand, two hundred seventy-three".