245579069 has 2 divisors, whose sum is σ = 245579070. Its totient is φ = 245579068.

The previous prime is 245579057. The next prime is 245579083. The reversal of 245579069 is 960975542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218152900 + 27426169 = 14770^2 + 5237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245579069 is a prime.

It is a super-2 number, since 2×245579069² = 120618158261813522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245579029) 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, 122789534 + 122789535.

It is an arithmetic number, because the mean of its divisors is an integer number (122789535).

Almost surely, 2^245579069 is an apocalyptic number.

It is an amenable number.

245579069 is a deficient number, since it is larger than the sum of its proper divisors (1).

245579069 is an equidigital number, since it uses as much as digits as its factorization.

245579069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 245579069 is about 15670.9626060431. The cubic root of 245579069 is about 626.2250693725.

The spelling of 245579069 in words is "two hundred forty-five million, five hundred seventy-nine thousand, sixty-nine".