245315929 has 2 divisors, whose sum is σ = 245315930. Its totient is φ = 245315928.

The previous prime is 245315921. The next prime is 245315963. The reversal of 245315929 is 929513542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158080329 + 87235600 = 12573^2 + 9340^2 .

It is a cyclic number.

It is not a de Polignac number, because 245315929 - 2³ = 245315921 is a prime.

It is a super-2 number, since 2×245315929² = 120359810042266082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245315891 and 245315900.

It is not a weakly prime, because it can be changed into another prime (245315921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122657964 + 122657965.

It is an arithmetic number, because the mean of its divisors is an integer number (122657965).

Almost surely, 2^245315929 is an apocalyptic number.

It is an amenable number.

245315929 is a deficient number, since it is larger than the sum of its proper divisors (1).

245315929 is an equidigital number, since it uses as much as digits as its factorization.

245315929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 40.

The square root of 245315929 is about 15662.5645728916. The cubic root of 245315929 is about 626.0013209933.

The spelling of 245315929 in words is "two hundred forty-five million, three hundred fifteen thousand, nine hundred twenty-nine".