150538 has 4 divisors (see below), whose sum is σ = 225810. Its totient is φ = 75268.

The previous prime is 150533. The next prime is 150551. The reversal of 150538 is 835051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835051 = 7 ⋅119293.

It can be written as a sum of positive squares in only one way, i.e., 131769 + 18769 = 363^2 + 137^2 .

It is not an unprimeable number, because it can be changed into a prime (150533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37633 + ... + 37636.

2¹⁵⁰⁵³⁸ is an apocalyptic number.

150538 is a deficient number, since it is larger than the sum of its proper divisors (75272).

150538 is an equidigital number, since it uses as much as digits as its factorization.

150538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75271.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 150538 is about 387.9922679642. The cubic root of 150538 is about 53.1963760322.

Adding to 150538 its reverse (835051), we get a palindrome (985589).

The spelling of 150538 in words is "one hundred fifty thousand, five hundred thirty-eight".