245529081 has 48 divisors (see below), whose sum is σ = 418549248. Its totient is φ = 135792000.

The previous prime is 245529049. The next prime is 245529091. The reversal of 245529081 is 180925542.

245529081 is a `hidden beast` number, since 24 + 552 + 9 + 0 + 81 = 666.

It is not a de Polignac number, because 245529081 - 2⁵ = 245529049 is a prime.

It is a super-2 number, since 2×245529081² = 120569059233409122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245529091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 298651 + ... + 299471.

It is an arithmetic number, because the mean of its divisors is an integer number (8719776).

Almost surely, 2^245529081 is an apocalyptic number.

245529081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

245529081 is a deficient number, since it is larger than the sum of its proper divisors (173020167).

245529081 is a wasteful number, since it uses less digits than its factorization.

245529081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 245529081 is about 15669.3676005128. The cubic root of 245529081 is about 626.1825767948.

It can be divided in two parts, 24552 and 9081, that added together give a palindrome (33633).

The spelling of 245529081 in words is "two hundred forty-five million, five hundred twenty-nine thousand, eighty-one".