147257317 has 2 divisors, whose sum is σ = 147257318. Its totient is φ = 147257316.

The previous prime is 147257309. The next prime is 147257321. The reversal of 147257317 is 713752741.

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., 146071396 + 1185921 = 12086^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 147257317 - 2³ = 147257309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147257387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73628658 + 73628659.

It is an arithmetic number, because the mean of its divisors is an integer number (73628659).

Almost surely, 2^147257317 is an apocalyptic number.

It is an amenable number.

147257317 is a deficient number, since it is larger than the sum of its proper divisors (1).

147257317 is an equidigital number, since it uses as much as digits as its factorization.

147257317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41160, while the sum is 37.

The square root of 147257317 is about 12134.9625874990. The cubic root of 147257317 is about 528.0709713388.

The spelling of 147257317 in words is "one hundred forty-seven million, two hundred fifty-seven thousand, three hundred seventeen".