150665197 has 2 divisors, whose sum is σ = 150665198. Its totient is φ = 150665196.

The previous prime is 150665171. The next prime is 150665209. The reversal of 150665197 is 791566051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148011556 + 2653641 = 12166^2 + 1629^2 .

It is an emirp because it is prime and its reverse (791566051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150665197 - 2¹⁹ = 150140909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150665107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75332598 + 75332599.

It is an arithmetic number, because the mean of its divisors is an integer number (75332599).

Almost surely, 2^150665197 is an apocalyptic number.

It is an amenable number.

150665197 is a deficient number, since it is larger than the sum of its proper divisors (1).

150665197 is an equidigital number, since it uses as much as digits as its factorization.

150665197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 150665197 is about 12274.5752268663. The cubic root of 150665197 is about 532.1135456380.

The spelling of 150665197 in words is "one hundred fifty million, six hundred sixty-five thousand, one hundred ninety-seven".