2355557 has 2 divisors, whose sum is σ = 2355558. Its totient is φ = 2355556.

The previous prime is 2355539. The next prime is 2355559. The reversal of 2355557 is 7555532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2353156 + 2401 = 1534^2 + 49^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355557 - 2¹⁶ = 2290021 is a prime.

Together with 2355559, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2355559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177778 + 1177779.

It is an arithmetic number, because the mean of its divisors is an integer number (1177779).

2^2355557 is an apocalyptic number.

It is an amenable number.

2355557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355557 is an equidigital number, since it uses as much as digits as its factorization.

2355557 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 2355557 is about 1534.7823949994. The cubic root of 2355557 is about 133.0550020308.

The spelling of 2355557 in words is "two million, three hundred fifty-five thousand, five hundred fifty-seven".