245323657 has 4 divisors (see below), whose sum is σ = 245679376. Its totient is φ = 244967940.

The previous prime is 245323633. The next prime is 245323693. The reversal of 245323657 is 756323542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245323657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245323607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176823 + ... + 178204.

It is an arithmetic number, because the mean of its divisors is an integer number (61419844).

Almost surely, 2^245323657 is an apocalyptic number.

It is an amenable number.

245323657 is a deficient number, since it is larger than the sum of its proper divisors (355719).

245323657 is an equidigital number, since it uses as much as digits as its factorization.

245323657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355718.

The product of its digits is 151200, while the sum is 37.

The square root of 245323657 is about 15662.8112738423. The cubic root of 245323657 is about 626.0078944045.

The spelling of 245323657 in words is "two hundred forty-five million, three hundred twenty-three thousand, six hundred fifty-seven".