245502281 has 2 divisors, whose sum is σ = 245502282. Its totient is φ = 245502280.

The previous prime is 245502269. The next prime is 245502319. The reversal of 245502281 is 182205542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243204025 + 2298256 = 15595^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 245502281 - 2¹⁴ = 245485897 is a prime.

It is a super-3 number, since 3×245502281³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245502221) 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 as a sum of consecutive naturals, namely, 122751140 + 122751141.

It is an arithmetic number, because the mean of its divisors is an integer number (122751141).

Almost surely, 2^245502281 is an apocalyptic number.

It is an amenable number.

245502281 is a deficient number, since it is larger than the sum of its proper divisors (1).

245502281 is an equidigital number, since it uses as much as digits as its factorization.

245502281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 245502281 is about 15668.5124054583. The cubic root of 245502281 is about 626.1597929307.

The spelling of 245502281 in words is "two hundred forty-five million, five hundred two thousand, two hundred eighty-one".