150197917 has 2 divisors, whose sum is σ = 150197918. Its totient is φ = 150197916.

The previous prime is 150197899. The next prime is 150197939. The reversal of 150197917 is 719791051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147355321 + 2842596 = 12139^2 + 1686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150197917 is a prime.

It is a super-2 number, since 2×150197917² = 45118828542277778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 150197917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150197977) 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, 75098958 + 75098959.

It is an arithmetic number, because the mean of its divisors is an integer number (75098959).

Almost surely, 2^150197917 is an apocalyptic number.

It is an amenable number.

150197917 is a deficient number, since it is larger than the sum of its proper divisors (1).

150197917 is an equidigital number, since it uses as much as digits as its factorization.

150197917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 40.

The square root of 150197917 is about 12255.5259781047. The cubic root of 150197917 is about 531.5628687719.

The spelling of 150197917 in words is "one hundred fifty million, one hundred ninety-seven thousand, nine hundred seventeen".