2656553 has 2 divisors, whose sum is σ = 2656554. Its totient is φ = 2656552.

The previous prime is 2656547. The next prime is 2656601. The reversal of 2656553 is 3556562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1338649 + 1317904 = 1157^2 + 1148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2656453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328276 + 1328277.

It is an arithmetic number, because the mean of its divisors is an integer number (1328277).

2^2656553 is an apocalyptic number.

It is an amenable number.

2656553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656553 is an equidigital number, since it uses as much as digits as its factorization.

2656553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 32.

The square root of 2656553 is about 1629.8935548066. The cubic root of 2656553 is about 138.4967221526.

Subtracting 2656553 from its reverse (3556562), we obtain a palindrome (900009).

The spelling of 2656553 in words is "two million, six hundred fifty-six thousand, five hundred fifty-three".