150531161 has 4 divisors (see below), whose sum is σ = 164215824. Its totient is φ = 136846500.

The previous prime is 150531149. The next prime is 150531163. The reversal of 150531161 is 161135051.

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 a cyclic number.

It is not a de Polignac number, because 150531161 - 2⁶ = 150531097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (150531163) 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, 6842315 + ... + 6842336.

It is an arithmetic number, because the mean of its divisors is an integer number (41053956).

Almost surely, 2^150531161 is an apocalyptic number.

150531161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

150531161 is a deficient number, since it is larger than the sum of its proper divisors (13684663).

150531161 is a wasteful number, since it uses less digits than its factorization.

150531161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13684662.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 150531161 is about 12269.1141081987. The cubic root of 150531161 is about 531.9557044262.

The spelling of 150531161 in words is "one hundred fifty million, five hundred thirty-one thousand, one hundred sixty-one".