2255657 has 2 divisors, whose sum is σ = 2255658. Its totient is φ = 2255656.

The previous prime is 2255639. The next prime is 2255663. The reversal of 2255657 is 7565522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1752976 + 502681 = 1324^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255657 - 2¹⁸ = 1993513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2255677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127828 + 1127829.

It is an arithmetic number, because the mean of its divisors is an integer number (1127829).

2^2255657 is an apocalyptic number.

It is an amenable number.

2255657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255657 is an equidigital number, since it uses as much as digits as its factorization.

2255657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 2255657 is about 1501.8844829081. The cubic root of 2255657 is about 131.1467965734.

The spelling of 2255657 in words is "two million, two hundred fifty-five thousand, six hundred fifty-seven".