149571017 has 2 divisors, whose sum is σ = 149571018. Its totient is φ = 149571016.

The previous prime is 149571013. The next prime is 149571041. The reversal of 149571017 is 710175941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 16491721 = 11536^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 149571017 - 2² = 149571013 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149571011) 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, 74785508 + 74785509.

It is an arithmetic number, because the mean of its divisors is an integer number (74785509).

Almost surely, 2^149571017 is an apocalyptic number.

It is an amenable number.

149571017 is a deficient number, since it is larger than the sum of its proper divisors (1).

149571017 is an equidigital number, since it uses as much as digits as its factorization.

149571017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 35.

The square root of 149571017 is about 12229.9230169286. The cubic root of 149571017 is about 530.8222871197.

The spelling of 149571017 in words is "one hundred forty-nine million, five hundred seventy-one thousand, seventeen".