193055657 has 2 divisors, whose sum is σ = 193055658. Its totient is φ = 193055656.

The previous prime is 193055567. The next prime is 193055669. The reversal of 193055657 is 756550391.

193055657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (193055567) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149548441 + 43507216 = 12229^2 + 6596^2 .

It is an emirp because it is prime and its reverse (756550391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193055657 - 2²² = 188861353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (193055557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96527828 + 96527829.

It is an arithmetic number, because the mean of its divisors is an integer number (96527829).

Almost surely, 2^193055657 is an apocalyptic number.

It is an amenable number.

193055657 is a deficient number, since it is larger than the sum of its proper divisors (1).

193055657 is an equidigital number, since it uses as much as digits as its factorization.

193055657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 193055657 is about 13894.4469843172. The cubic root of 193055657 is about 577.9552024044.

The spelling of 193055657 in words is "one hundred ninety-three million, fifty-five thousand, six hundred fifty-seven".