73281337 has 2 divisors, whose sum is σ = 73281338. Its totient is φ = 73281336.

The previous prime is 73281323. The next prime is 73281343. The reversal of 73281337 is 73318237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59768361 + 13512976 = 7731^2 + 3676^2 .

It is a cyclic number.

It is not a de Polignac number, because 73281337 - 2⁷ = 73281209 is a prime.

It is not a weakly prime, because it can be changed into another prime (73281367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36640668 + 36640669.

It is an arithmetic number, because the mean of its divisors is an integer number (36640669).

Almost surely, 2^73281337 is an apocalyptic number.

It is an amenable number.

73281337 is a deficient number, since it is larger than the sum of its proper divisors (1).

73281337 is an equidigital number, since it uses as much as digits as its factorization.

73281337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 73281337 is about 8560.4519156409. The cubic root of 73281337 is about 418.4701276242.

The spelling of 73281337 in words is "seventy-three million, two hundred eighty-one thousand, three hundred thirty-seven".