2557553 has 2 divisors, whose sum is σ = 2557554. Its totient is φ = 2557552.

The previous prime is 2557519. The next prime is 2557561. The reversal of 2557553 is 3557552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620529 + 937024 = 1273^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557553 - 2⁸ = 2557297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278776 + 1278777.

It is an arithmetic number, because the mean of its divisors is an integer number (1278777).

2^2557553 is an apocalyptic number.

It is an amenable number.

2557553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557553 is an equidigital number, since it uses as much as digits as its factorization.

2557553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26250, while the sum is 32.

The square root of 2557553 is about 1599.2351296792. The cubic root of 2557553 is about 136.7544752648.

Subtracting 2557553 from its reverse (3557552), we obtain a palindrome (999999).

The spelling of 2557553 in words is "two million, five hundred fifty-seven thousand, five hundred fifty-three".