281457097 has 2 divisors, whose sum is σ = 281457098. Its totient is φ = 281457096.

The previous prime is 281457061. The next prime is 281457107. The reversal of 281457097 is 790754182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230705721 + 50751376 = 15189^2 + 7124^2 .

It is a cyclic number.

It is not a de Polignac number, because 281457097 - 2⁷ = 281456969 is a prime.

It is not a weakly prime, because it can be changed into another prime (281451097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140728548 + 140728549.

It is an arithmetic number, because the mean of its divisors is an integer number (140728549).

Almost surely, 2^281457097 is an apocalyptic number.

It is an amenable number.

281457097 is a deficient number, since it is larger than the sum of its proper divisors (1).

281457097 is an equidigital number, since it uses as much as digits as its factorization.

281457097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 281457097 is about 16776.6831346366. The cubic root of 281457097 is about 655.3461232244.

The spelling of 281457097 in words is "two hundred eighty-one million, four hundred fifty-seven thousand, ninety-seven".