285202481 has 2 divisors, whose sum is σ = 285202482. Its totient is φ = 285202480.

The previous prime is 285202457. The next prime is 285202499. The reversal of 285202481 is 184202582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261921856 + 23280625 = 16184^2 + 4825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285202481 is a prime.

It is a super-2 number, since 2×285202481² = 162680910337110722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285202781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142601240 + 142601241.

It is an arithmetic number, because the mean of its divisors is an integer number (142601241).

Almost surely, 2^285202481 is an apocalyptic number.

It is an amenable number.

285202481 is a deficient number, since it is larger than the sum of its proper divisors (1).

285202481 is an equidigital number, since it uses as much as digits as its factorization.

285202481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 285202481 is about 16887.9389210170. The cubic root of 285202481 is about 658.2402471102.

The spelling of 285202481 in words is "two hundred eighty-five million, two hundred two thousand, four hundred eighty-one".