150861 has 4 divisors (see below), whose sum is σ = 201152. Its totient is φ = 100572.

The previous prime is 150847. The next prime is 150869. The reversal of 150861 is 168051.

150861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 150861 - 2⁶ = 150797 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150869) 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, 25141 + ... + 25146.

It is an arithmetic number, because the mean of its divisors is an integer number (50288).

2¹⁵⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

150861 is a deficient number, since it is larger than the sum of its proper divisors (50291).

150861 is an equidigital number, since it uses as much as digits as its factorization.

150861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50290.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 150861 is about 388.4082903338. The cubic root of 150861 is about 53.2343955688.

The spelling of 150861 in words is "one hundred fifty thousand, eight hundred sixty-one".