245895281 has 2 divisors, whose sum is σ = 245895282. Its totient is φ = 245895280.

The previous prime is 245895271. The next prime is 245895329. The reversal of 245895281 is 182598542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244640881 + 1254400 = 15641^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 245895281 - 2⁶ = 245895217 is a prime.

It is a super-2 number, since 2×245895281² = 120928978436137922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245895271) 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, 122947640 + 122947641.

It is an arithmetic number, because the mean of its divisors is an integer number (122947641).

Almost surely, 2^245895281 is an apocalyptic number.

It is an amenable number.

245895281 is a deficient number, since it is larger than the sum of its proper divisors (1).

245895281 is an equidigital number, since it uses as much as digits as its factorization.

245895281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 44.

The square root of 245895281 is about 15681.0484662219. The cubic root of 245895281 is about 626.4937336250.

The spelling of 245895281 in words is "two hundred forty-five million, eight hundred ninety-five thousand, two hundred eighty-one".