150019897 has 4 divisors (see below), whose sum is σ = 150063760. Its totient is φ = 149976036.

The previous prime is 150019889. The next prime is 150019921. The reversal of 150019897 is 798910051.

It is a happy number.

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: 798910051 = 41 ⋅19485611.

It is a cyclic number.

It is not a de Polignac number, because 150019897 - 2³ = 150019889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150016897) 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, 16323 + ... + 23800.

It is an arithmetic number, because the mean of its divisors is an integer number (37515940).

Almost surely, 2^150019897 is an apocalyptic number.

It is an amenable number.

150019897 is a deficient number, since it is larger than the sum of its proper divisors (43863).

150019897 is an equidigital number, since it uses as much as digits as its factorization.

150019897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43862.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 150019897 is about 12248.2609786043. The cubic root of 150019897 is about 531.3527765721.

The spelling of 150019897 in words is "one hundred fifty million, nineteen thousand, eight hundred ninety-seven".