155858379 has 4 divisors (see below), whose sum is σ = 207811176. Its totient is φ = 103905584.

The previous prime is 155858371. The next prime is 155858399. The reversal of 155858379 is 973858551.

155858379 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 an emirpimes, since its reverse is a distinct semiprime: 973858551 = 3 ⋅324619517.

It is a cyclic number.

It is not a de Polignac number, because 155858379 - 2³ = 155858371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155858371) 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, 25976394 + ... + 25976399.

It is an arithmetic number, because the mean of its divisors is an integer number (51952794).

Almost surely, 2^155858379 is an apocalyptic number.

155858379 is a deficient number, since it is larger than the sum of its proper divisors (51952797).

155858379 is an equidigital number, since it uses as much as digits as its factorization.

155858379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51952796.

The product of its digits is 1512000, while the sum is 51.

The square root of 155858379 is about 12484.3253321916. The cubic root of 155858379 is about 538.1583110439.

The spelling of 155858379 in words is "one hundred fifty-five million, eight hundred fifty-eight thousand, three hundred seventy-nine".