245726081 has 2 divisors, whose sum is σ = 245726082. Its totient is φ = 245726080.

The previous prime is 245726053. The next prime is 245726083. The reversal of 245726081 is 180627542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219306481 + 26419600 = 14809^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 245726081 - 2⁶ = 245726017 is a prime.

It is a super-2 number, since 2×245726081² = 120762613767237122, which contains 22 as substring.

Together with 245726083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245726083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122863040 + 122863041.

It is an arithmetic number, because the mean of its divisors is an integer number (122863041).

Almost surely, 2^245726081 is an apocalyptic number.

It is an amenable number.

245726081 is a deficient number, since it is larger than the sum of its proper divisors (1).

245726081 is an equidigital number, since it uses as much as digits as its factorization.

245726081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 245726081 is about 15675.6524904069. The cubic root of 245726081 is about 626.3500043351.

The spelling of 245726081 in words is "two hundred forty-five million, seven hundred twenty-six thousand, eighty-one".