245788081 has 16 divisors (see below), whose sum is σ = 307353600. Its totient is φ = 190950480.

The previous prime is 245788069. The next prime is 245788087. The reversal of 245788081 is 180887542.

It is not a de Polignac number, because 245788081 - 2¹⁹ = 245263793 is a prime.

It is a super-2 number, since 2×245788081² = 120823561523325122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245788087) 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, 22120 + ... + 31318.

It is an arithmetic number, because the mean of its divisors is an integer number (19209600).

Almost surely, 2^245788081 is an apocalyptic number.

It is an amenable number.

245788081 is a deficient number, since it is larger than the sum of its proper divisors (61565519).

245788081 is a wasteful number, since it uses less digits than its factorization.

245788081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9564.

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 245788081 is about 15677.6299548114. The cubic root of 245788081 is about 626.4026787527.

The spelling of 245788081 in words is "two hundred forty-five million, seven hundred eighty-eight thousand, eighty-one".