150055999 has 4 divisors (see below), whose sum is σ = 150678880. Its totient is φ = 149433120.

The previous prime is 150055987. The next prime is 150056009. The reversal of 150055999 is 999550051.

It is a happy number.

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 150055999 - 2²³ = 141667391 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 (150055099) 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, 311079 + ... + 311560.

It is an arithmetic number, because the mean of its divisors is an integer number (37669720).

Almost surely, 2^150055999 is an apocalyptic number.

150055999 is a deficient number, since it is larger than the sum of its proper divisors (622881).

150055999 is an equidigital number, since it uses as much as digits as its factorization.

150055999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622880.

The product of its (nonzero) digits is 91125, while the sum is 43.

The square root of 150055999 is about 12249.7346501873. The cubic root of 150055999 is about 531.3953961618.

The spelling of 150055999 in words is "one hundred fifty million, fifty-five thousand, nine hundred ninety-nine".