155998127 has 4 divisors (see below), whose sum is σ = 156335520. Its totient is φ = 155660736.

The previous prime is 155998093. The next prime is 155998159. The reversal of 155998127 is 721899551.

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 155998127 - 2¹⁰ = 155997103 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 (155992127) 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, 168002 + ... + 168927.

It is an arithmetic number, because the mean of its divisors is an integer number (39083880).

Almost surely, 2^155998127 is an apocalyptic number.

155998127 is a deficient number, since it is larger than the sum of its proper divisors (337393).

155998127 is an equidigital number, since it uses as much as digits as its factorization.

155998127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337392.

The product of its digits is 226800, while the sum is 47.

The square root of 155998127 is about 12489.9210165637. The cubic root of 155998127 is about 538.3191067648.

The spelling of 155998127 in words is "one hundred fifty-five million, nine hundred ninety-eight thousand, one hundred twenty-seven".