73317157 has 2 divisors, whose sum is σ = 73317158. Its totient is φ = 73317156.

The previous prime is 73317131. The next prime is 73317161. The reversal of 73317157 is 75171337.

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., 64738116 + 8579041 = 8046^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 73317157 - 2¹⁵ = 73284389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73317187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36658578 + 36658579.

It is an arithmetic number, because the mean of its divisors is an integer number (36658579).

Almost surely, 2^73317157 is an apocalyptic number.

It is an amenable number.

73317157 is a deficient number, since it is larger than the sum of its proper divisors (1).

73317157 is an equidigital number, since it uses as much as digits as its factorization.

73317157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15435, while the sum is 34.

The square root of 73317157 is about 8562.5438393038. The cubic root of 73317157 is about 418.5382994077.

The spelling of 73317157 in words is "seventy-three million, three hundred seventeen thousand, one hundred fifty-seven".