202487281 has 2 divisors, whose sum is σ = 202487282. Its totient is φ = 202487280.

The previous prime is 202487267. The next prime is 202487291. The reversal of 202487281 is 182784202.

202487281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159138225 + 43349056 = 12615^2 + 6584^2 .

It is a cyclic number.

It is not a de Polignac number, because 202487281 - 2⁵ = 202487249 is a prime.

It is a super-2 number, since 2×202487281² = 82002197933545922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202487231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101243640 + 101243641.

It is an arithmetic number, because the mean of its divisors is an integer number (101243641).

Almost surely, 2^202487281 is an apocalyptic number.

It is an amenable number.

202487281 is a deficient number, since it is larger than the sum of its proper divisors (1).

202487281 is an equidigital number, since it uses as much as digits as its factorization.

202487281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 202487281 is about 14229.8025636338. The cubic root of 202487281 is about 587.2178513003.

The spelling of 202487281 in words is "two hundred two million, four hundred eighty-seven thousand, two hundred eighty-one".