2554421 has 2 divisors, whose sum is σ = 2554422. Its totient is φ = 2554420.

The previous prime is 2554399. The next prime is 2554429. The reversal of 2554421 is 1244552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 555025 = 1414^2 + 745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2554421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2554429) 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, 1277210 + 1277211.

It is an arithmetic number, because the mean of its divisors is an integer number (1277211).

2^2554421 is an apocalyptic number.

It is an amenable number.

2554421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2554421 is an equidigital number, since it uses as much as digits as its factorization.

2554421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 23.

The square root of 2554421 is about 1598.2556115966. The cubic root of 2554421 is about 136.6986289181.

Adding to 2554421 its reverse (1244552), we get a palindrome (3798973).

The spelling of 2554421 in words is "two million, five hundred fifty-four thousand, four hundred twenty-one".