150981 has 8 divisors (see below), whose sum is σ = 204960. Its totient is φ = 98832.

The previous prime is 150979. The next prime is 150989. The reversal of 150981 is 189051.

150981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 150981 - 2¹ = 150979 is a prime.

It is a super-2 number, since 2×150981² = 45590524722, which contains 22 as substring.

150981 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 150981.

It is not an unprimeable number, because it can be changed into a prime (150989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250 + ... + 603.

It is an arithmetic number, because the mean of its divisors is an integer number (25620).

2¹⁵⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

150981 is a deficient number, since it is larger than the sum of its proper divisors (53979).

150981 is an equidigital number, since it uses as much as digits as its factorization.

150981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 150981 is about 388.5627362473. The cubic root of 150981 is about 53.2485066477.

The spelling of 150981 in words is "one hundred fifty thousand, nine hundred eighty-one".