150491 has 4 divisors (see below), whose sum is σ = 164184. Its totient is φ = 136800.

The previous prime is 150473. The next prime is 150497. The reversal of 150491 is 194051.

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

It is a cyclic number.

It is not a de Polignac number, because 150491 - 2⁶ = 150427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6830 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (41046).

2¹⁵⁰⁴⁹¹ is an apocalyptic number.

150491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

150491 is a deficient number, since it is larger than the sum of its proper divisors (13693).

150491 is a wasteful number, since it uses less digits than its factorization.

150491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 150491 is about 387.9316950186. The cubic root of 150491 is about 53.1908392465.

The spelling of 150491 in words is "one hundred fifty thousand, four hundred ninety-one".