214553657 has 2 divisors, whose sum is σ = 214553658. Its totient is φ = 214553656.

The previous prime is 214553609. The next prime is 214553659. The reversal of 214553657 is 756355412.

It is a happy number.

214553657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213043216 + 1510441 = 14596^2 + 1229^2 .

It is a cyclic number.

It is not a de Polignac number, because 214553657 - 2⁸ = 214553401 is a prime.

Together with 214553659, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214553657.

It is not a weakly prime, because it can be changed into another prime (214553659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107276828 + 107276829.

It is an arithmetic number, because the mean of its divisors is an integer number (107276829).

Almost surely, 2^214553657 is an apocalyptic number.

It is an amenable number.

214553657 is a deficient number, since it is larger than the sum of its proper divisors (1).

214553657 is an equidigital number, since it uses as much as digits as its factorization.

214553657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 214553657 is about 14647.6502211106. The cubic root of 214553657 is about 598.6577932257.

The spelling of 214553657 in words is "two hundred fourteen million, five hundred fifty-three thousand, six hundred fifty-seven".