245155522949 has 2 divisors, whose sum is σ = 245155522950. Its totient is φ = 245155522948.

The previous prime is 245155522889. The next prime is 245155522999. The reversal of 245155522949 is 949225551542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242442988225 + 2712534724 = 492385^2 + 52082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245155522949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245155522949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245155522999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122577761474 + 122577761475.

It is an arithmetic number, because the mean of its divisors is an integer number (122577761475).

Almost surely, 2^245155522949 is an apocalyptic number.

It is an amenable number.

245155522949 is a deficient number, since it is larger than the sum of its proper divisors (1).

245155522949 is an equidigital number, since it uses as much as digits as its factorization.

245155522949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480000, while the sum is 53.

The spelling of 245155522949 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred twenty-two thousand, nine hundred forty-nine".