245530681 has 16 divisors (see below), whose sum is σ = 281392128. Its totient is φ = 212058000.

The previous prime is 245530669. The next prime is 245530717. The reversal of 245530681 is 186035542.

It is not a de Polignac number, because 245530681 - 2⁷ = 245530553 is a prime.

It is a super-2 number, since 2×245530681² = 120570630624647522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245530601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34990 + ... + 41416.

It is an arithmetic number, because the mean of its divisors is an integer number (17587008).

Almost surely, 2^245530681 is an apocalyptic number.

It is an amenable number.

245530681 is a deficient number, since it is larger than the sum of its proper divisors (35861447).

245530681 is a wasteful number, since it uses less digits than its factorization.

245530681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 245530681 is about 15669.4186554575. The cubic root of 245530681 is about 626.1839369731.

The spelling of 245530681 in words is "two hundred forty-five million, five hundred thirty thousand, six hundred eighty-one".