245470081 has 2 divisors, whose sum is σ = 245470082. Its totient is φ = 245470080.

The previous prime is 245470067. The next prime is 245470087. The reversal of 245470081 is 180074542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218596225 + 26873856 = 14785^2 + 5184^2 .

It is a cyclic number.

It is not a de Polignac number, because 245470081 - 2¹⁹ = 244945793 is a prime.

It is a super-2 number, since 2×245470081² = 120511121332293122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245470087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122735040 + 122735041.

It is an arithmetic number, because the mean of its divisors is an integer number (122735041).

Almost surely, 2^245470081 is an apocalyptic number.

It is an amenable number.

245470081 is a deficient number, since it is larger than the sum of its proper divisors (1).

245470081 is an equidigital number, since it uses as much as digits as its factorization.

245470081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 245470081 is about 15667.4848332462. The cubic root of 245470081 is about 626.1324160949.

The spelling of 245470081 in words is "two hundred forty-five million, four hundred seventy thousand, eighty-one".