245343961 has 2 divisors, whose sum is σ = 245343962. Its totient is φ = 245343960.

The previous prime is 245343919. The next prime is 245344009. The reversal of 245343961 is 169343542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149303961 + 96040000 = 12219^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 245343961 - 2¹¹ = 245341913 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 245343961.

It is not a weakly prime, because it can be changed into another prime (245343911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122671980 + 122671981.

It is an arithmetic number, because the mean of its divisors is an integer number (122671981).

Almost surely, 2^245343961 is an apocalyptic number.

It is an amenable number.

245343961 is a deficient number, since it is larger than the sum of its proper divisors (1).

245343961 is an equidigital number, since it uses as much as digits as its factorization.

245343961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 245343961 is about 15663.4594199366. The cubic root of 245343961 is about 626.0251642618.

The spelling of 245343961 in words is "two hundred forty-five million, three hundred forty-three thousand, nine hundred sixty-one".