2551933 has 2 divisors, whose sum is σ = 2551934. Its totient is φ = 2551932.

The previous prime is 2551903. The next prime is 2551943. The reversal of 2551933 is 3391552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1954404 + 597529 = 1398^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551933 - 2⁹ = 2551421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551903) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275966 + 1275967.

It is an arithmetic number, because the mean of its divisors is an integer number (1275967).

2^2551933 is an apocalyptic number.

It is an amenable number.

2551933 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551933 is an equidigital number, since it uses as much as digits as its factorization.

2551933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 28.

The square root of 2551933 is about 1597.4770733879. The cubic root of 2551933 is about 136.6542331210.

It can be divided in two parts, 25519 and 33, that added together give a palindrome (25552).

The spelling of 2551933 in words is "two million, five hundred fifty-one thousand, nine hundred thirty-three".