151500009 has 4 divisors (see below), whose sum is σ = 202000016. Its totient is φ = 101000004.

The previous prime is 151500001. The next prime is 151500029. The reversal of 151500009 is 900005151.

It is a happy number.

151500009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 900005151 = 3 ⋅300001717.

It is not a de Polignac number, because 151500009 - 2³ = 151500001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151500001) 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, 25249999 + ... + 25250004.

It is an arithmetic number, because the mean of its divisors is an integer number (50500004).

Almost surely, 2^151500009 is an apocalyptic number.

It is an amenable number.

151500009 is a deficient number, since it is larger than the sum of its proper divisors (50500007).

151500009 is an equidigital number, since it uses as much as digits as its factorization.

151500009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50500006.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 151500009 is about 12308.5339906912. The cubic root of 151500009 is about 533.0945216853.

The spelling of 151500009 in words is "one hundred fifty-one million, five hundred thousand, nine".