245302301561 has 2 divisors, whose sum is σ = 245302301562. Its totient is φ = 245302301560.

The previous prime is 245302301509. The next prime is 245302301591. The reversal of 245302301561 is 165103203542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166969487161 + 78332814400 = 408619^2 + 279880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245302301561 is a prime.

It is a super-2 number, since 2×245302301561² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245302301591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122651150780 + 122651150781.

It is an arithmetic number, because the mean of its divisors is an integer number (122651150781).

Almost surely, 2^245302301561 is an apocalyptic number.

It is an amenable number.

245302301561 is a deficient number, since it is larger than the sum of its proper divisors (1).

245302301561 is an equidigital number, since it uses as much as digits as its factorization.

245302301561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 245302301561 in words is "two hundred forty-five billion, three hundred two million, three hundred one thousand, five hundred sixty-one".