245945977 has 2 divisors, whose sum is σ = 245945978. Its totient is φ = 245945976.

The previous prime is 245945941. The next prime is 245945983. The reversal of 245945977 is 779549542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184307776 + 61638201 = 13576^2 + 7851^2 .

It is a cyclic number.

It is not a de Polignac number, because 245945977 - 2¹⁵ = 245913209 is a prime.

It is not a weakly prime, because it can be changed into another prime (245955977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122972988 + 122972989.

It is an arithmetic number, because the mean of its divisors is an integer number (122972989).

Almost surely, 2^245945977 is an apocalyptic number.

It is an amenable number.

245945977 is a deficient number, since it is larger than the sum of its proper divisors (1).

245945977 is an equidigital number, since it uses as much as digits as its factorization.

245945977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 52.

The square root of 245945977 is about 15682.6648564585. The cubic root of 245945977 is about 626.5367852088.

The spelling of 245945977 in words is "two hundred forty-five million, nine hundred forty-five thousand, nine hundred seventy-seven".