245031081 has 16 divisors (see below), whose sum is σ = 346256064. Its totient is φ = 153598464.

The previous prime is 245031079. The next prime is 245031107. The reversal of 245031081 is 180130542.

245031081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245031081 - 2¹ = 245031079 is a prime.

It is a super-2 number, since 2×245031081² = 120080461312057122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245031001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81501 + ... + 84453.

It is an arithmetic number, because the mean of its divisors is an integer number (21641004).

Almost surely, 2^245031081 is an apocalyptic number.

It is an amenable number.

245031081 is a deficient number, since it is larger than the sum of its proper divisors (101224983).

245031081 is a wasteful number, since it uses less digits than its factorization.

245031081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 245031081 is about 15653.4686571379. The cubic root of 245031081 is about 625.7589338447.

The spelling of 245031081 in words is "two hundred forty-five million, thirty-one thousand, eighty-one".