2551123 has 2 divisors, whose sum is σ = 2551124. Its totient is φ = 2551122.

The previous prime is 2551103. The next prime is 2551127. The reversal of 2551123 is 3211552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2551123 - 2¹⁷ = 2420051 is a prime.

It is a super-2 number, since 2×2551123² = 13016457122258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2551123.

It is not a weakly prime, because it can be changed into another prime (2551127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275561 + 1275562.

It is an arithmetic number, because the mean of its divisors is an integer number (1275562).

2^2551123 is an apocalyptic number.

2551123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551123 is an equidigital number, since it uses as much as digits as its factorization.

2551123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 19.

The square root of 2551123 is about 1597.2235285019. The cubic root of 2551123 is about 136.6397732792.

Adding to 2551123 its reverse (3211552), we get a palindrome (5762675).

It can be divided in two parts, 255 and 1123, that added together give a triangular number (1378 = T₅₂).

The spelling of 2551123 in words is "two million, five hundred fifty-one thousand, one hundred twenty-three".