245336557 has 2 divisors, whose sum is σ = 245336558. Its totient is φ = 245336556.

The previous prime is 245336519. The next prime is 245336563. The reversal of 245336557 is 755633542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196532361 + 48804196 = 14019^2 + 6986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245336557 is a prime.

It is a super-2 number, since 2×245336557² = 120380052401228498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245336587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122668278 + 122668279.

It is an arithmetic number, because the mean of its divisors is an integer number (122668279).

Almost surely, 2^245336557 is an apocalyptic number.

It is an amenable number.

245336557 is a deficient number, since it is larger than the sum of its proper divisors (1).

245336557 is an equidigital number, since it uses as much as digits as its factorization.

245336557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 40.

The square root of 245336557 is about 15663.2230718968. The cubic root of 245336557 is about 626.0188667942.

The spelling of 245336557 in words is "two hundred forty-five million, three hundred thirty-six thousand, five hundred fifty-seven".