245530081 has 2 divisors, whose sum is σ = 245530082. Its totient is φ = 245530080.

The previous prime is 245530073. The next prime is 245530111. The reversal of 245530081 is 180035542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139027681 + 106502400 = 11791^2 + 10320^2 .

It is a cyclic number.

It is not a de Polignac number, because 245530081 - 2³ = 245530073 is a prime.

It is a super-2 number, since 2×245530081² = 120570041351733122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245530001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122765040 + 122765041.

It is an arithmetic number, because the mean of its divisors is an integer number (122765041).

Almost surely, 2^245530081 is an apocalyptic number.

It is an amenable number.

245530081 is a deficient number, since it is larger than the sum of its proper divisors (1).

245530081 is an equidigital number, since it uses as much as digits as its factorization.

245530081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 245530081 is about 15669.3995098727. The cubic root of 245530081 is about 626.1834269069.

The spelling of 245530081 in words is "two hundred forty-five million, five hundred thirty thousand, eighty-one".