150561 has 6 divisors (see below), whose sum is σ = 217490. Its totient is φ = 100368.

The previous prime is 150559. The next prime is 150571. The reversal of 150561 is 165051.

It can be written as a sum of positive squares in only one way, i.e., 136161 + 14400 = 369^2 + 120^2 .

It is not a de Polignac number, because 150561 - 2¹ = 150559 is a prime.

It is a super-2 number, since 2×150561² = 45337229442, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (150551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8356 + ... + 8373.

2¹⁵⁰⁵⁶¹ is an apocalyptic number.

It is an amenable number.

150561 is a deficient number, since it is larger than the sum of its proper divisors (66929).

150561 is a wasteful number, since it uses less digits than its factorization.

150561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735 (or 16732 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 150561 is about 388.0219065981. The cubic root of 150561 is about 53.1990851031.

The spelling of 150561 in words is "one hundred fifty thousand, five hundred sixty-one".