155135199 has 8 divisors (see below), whose sum is σ = 208476160. Its totient is φ = 102608856.

The previous prime is 155135179. The next prime is 155135221. The reversal of 155135199 is 991531551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155135199 - 2²⁴ = 138357983 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 (155135179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203209 + ... + 203970.

It is an arithmetic number, because the mean of its divisors is an integer number (26059520).

Almost surely, 2^155135199 is an apocalyptic number.

155135199 is a deficient number, since it is larger than the sum of its proper divisors (53340961).

155135199 is a wasteful number, since it uses less digits than its factorization.

155135199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407309.

The product of its digits is 30375, while the sum is 39.

The square root of 155135199 is about 12455.3281369862. The cubic root of 155135199 is about 537.3246721470.

The spelling of 155135199 in words is "one hundred fifty-five million, one hundred thirty-five thousand, one hundred ninety-nine".