245375657 has 2 divisors, whose sum is σ = 245375658. Its totient is φ = 245375656.

The previous prime is 245375653. The next prime is 245375681. The reversal of 245375657 is 756573542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241615936 + 3759721 = 15544^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 245375657 - 2² = 245375653 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245375651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122687828 + 122687829.

It is an arithmetic number, because the mean of its divisors is an integer number (122687829).

Almost surely, 2^245375657 is an apocalyptic number.

It is an amenable number.

245375657 is a deficient number, since it is larger than the sum of its proper divisors (1).

245375657 is an equidigital number, since it uses as much as digits as its factorization.

245375657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882000, while the sum is 44.

The square root of 245375657 is about 15664.4711688585. The cubic root of 245375657 is about 626.0521218429.

The spelling of 245375657 in words is "two hundred forty-five million, three hundred seventy-five thousand, six hundred fifty-seven".