150531503 has 4 divisors (see below), whose sum is σ = 154599960. Its totient is φ = 146463048.

The previous prime is 150531499. The next prime is 150531517. The reversal of 150531503 is 305135051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 150531503 - 2² = 150531499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150531533) 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, 2034173 + ... + 2034246.

It is an arithmetic number, because the mean of its divisors is an integer number (38649990).

Almost surely, 2^150531503 is an apocalyptic number.

150531503 is a deficient number, since it is larger than the sum of its proper divisors (4068457).

150531503 is an equidigital number, since it uses as much as digits as its factorization.

150531503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068456.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 150531503 is about 12269.1280456274. The cubic root of 150531503 is about 531.9561072857.

Adding to 150531503 its reverse (305135051), we get a palindrome (455666554).

The spelling of 150531503 in words is "one hundred fifty million, five hundred thirty-one thousand, five hundred three".