150043661 has 4 divisors (see below), whose sum is σ = 152157024. Its totient is φ = 147930300.

The previous prime is 150043643. The next prime is 150043687. The reversal of 150043661 is 166340051.

150043661 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, and also an emirpimes, since its reverse is a distinct semiprime: 166340051 = 83 ⋅2004097.

It is a cyclic number.

It is not a de Polignac number, because 150043661 - 2¹⁰ = 150042637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 150043661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150043631) 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, 1056575 + ... + 1056716.

It is an arithmetic number, because the mean of its divisors is an integer number (38039256).

Almost surely, 2^150043661 is an apocalyptic number.

It is an amenable number.

150043661 is a deficient number, since it is larger than the sum of its proper divisors (2113363).

150043661 is an equidigital number, since it uses as much as digits as its factorization.

150043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113362.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 150043661 is about 12249.2310370896. The cubic root of 150043661 is about 531.3808315190.

The spelling of 150043661 in words is "one hundred fifty million, forty-three thousand, six hundred sixty-one".