281164049 has 2 divisors, whose sum is σ = 281164050. Its totient is φ = 281164048.

The previous prime is 281164021. The next prime is 281164061. The reversal of 281164049 is 940461182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199713424 + 81450625 = 14132^2 + 9025^2 .

It is a cyclic number.

It is not a de Polignac number, because 281164049 - 2¹² = 281159953 is a prime.

It is not a weakly prime, because it can be changed into another prime (281104049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140582024 + 140582025.

It is an arithmetic number, because the mean of its divisors is an integer number (140582025).

Almost surely, 2^281164049 is an apocalyptic number.

It is an amenable number.

281164049 is a deficient number, since it is larger than the sum of its proper divisors (1).

281164049 is an equidigital number, since it uses as much as digits as its factorization.

281164049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 281164049 is about 16767.9470717199. The cubic root of 281164049 is about 655.1185994282.

The spelling of 281164049 in words is "two hundred eighty-one million, one hundred sixty-four thousand, forty-nine".