150321513 has 4 divisors (see below), whose sum is σ = 200428688. Its totient is φ = 100214340.

The previous prime is 150321499. The next prime is 150321533. The reversal of 150321513 is 315123051.

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: 315123051 = 3 ⋅105041017.

It is not a de Polignac number, because 150321513 - 2⁹ = 150321001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 150321513.

It is not an unprimeable number, because it can be changed into a prime (150321533) 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, 25053583 + ... + 25053588.

It is an arithmetic number, because the mean of its divisors is an integer number (50107172).

Almost surely, 2^150321513 is an apocalyptic number.

It is an amenable number.

150321513 is a deficient number, since it is larger than the sum of its proper divisors (50107175).

150321513 is an equidigital number, since it uses as much as digits as its factorization.

150321513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50107174.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 150321513 is about 12260.5674012258. The cubic root of 150321513 is about 531.7086342901.

Adding to 150321513 its reverse (315123051), we get a palindrome (465444564).

The spelling of 150321513 in words is "one hundred fifty million, three hundred twenty-one thousand, five hundred thirteen".