150191 has 4 divisors (see below), whose sum is σ = 155400. Its totient is φ = 144984.

The previous prime is 150169. The next prime is 150193. The reversal of 150191 is 191051.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150191 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (38850).

2¹⁵⁰¹⁹¹ is an apocalyptic number.

150191 is a deficient number, since it is larger than the sum of its proper divisors (5209).

150191 is an equidigital number, since it uses as much as digits as its factorization.

150191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 150191 is about 387.5448361158. The cubic root of 150191 is about 53.1554708701.

The spelling of 150191 in words is "one hundred fifty thousand, one hundred ninety-one".