245432657 has 2 divisors, whose sum is σ = 245432658. Its totient is φ = 245432656.

The previous prime is 245432653. The next prime is 245432669. The reversal of 245432657 is 756234542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236882881 + 8549776 = 15391^2 + 2924^2 .

It is a cyclic number.

It is not a de Polignac number, because 245432657 - 2² = 245432653 is a prime.

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 245432657.

It is not a weakly prime, because it can be changed into another prime (245432653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122716328 + 122716329.

It is an arithmetic number, because the mean of its divisors is an integer number (122716329).

Almost surely, 2^245432657 is an apocalyptic number.

It is an amenable number.

245432657 is a deficient number, since it is larger than the sum of its proper divisors (1).

245432657 is an equidigital number, since it uses as much as digits as its factorization.

245432657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 38.

The square root of 245432657 is about 15666.2904671144. The cubic root of 245432657 is about 626.1005947416.

The spelling of 245432657 in words is "two hundred forty-five million, four hundred thirty-two thousand, six hundred fifty-seven".