73118257 has 2 divisors, whose sum is σ = 73118258. Its totient is φ = 73118256.

The previous prime is 73118249. The next prime is 73118273. The reversal of 73118257 is 75281137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60699681 + 12418576 = 7791^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 73118257 - 2³ = 73118249 is a prime.

It is not a weakly prime, because it can be changed into another prime (73118957) 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, 36559128 + 36559129.

It is an arithmetic number, because the mean of its divisors is an integer number (36559129).

Almost surely, 2^73118257 is an apocalyptic number.

It is an amenable number.

73118257 is a deficient number, since it is larger than the sum of its proper divisors (1).

73118257 is an equidigital number, since it uses as much as digits as its factorization.

73118257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 34.

The square root of 73118257 is about 8550.9214123391. The cubic root of 73118257 is about 418.1594764758.

The spelling of 73118257 in words is "seventy-three million, one hundred eighteen thousand, two hundred fifty-seven".