155864379 has 16 divisors (see below), whose sum is σ = 231986304. Its totient is φ = 92265600.

The previous prime is 155864377. The next prime is 155864389. The reversal of 155864379 is 973468551.

155864379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155864379 - 2¹ = 155864377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155864377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53502 + ... + 56339.

It is an arithmetic number, because the mean of its divisors is an integer number (14499144).

Almost surely, 2^155864379 is an apocalyptic number.

155864379 is a deficient number, since it is larger than the sum of its proper divisors (76121925).

155864379 is a wasteful number, since it uses less digits than its factorization.

155864379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109898.

The product of its digits is 907200, while the sum is 48.

The square root of 155864379 is about 12484.5656312104. The cubic root of 155864379 is about 538.1652166900.

The spelling of 155864379 in words is "one hundred fifty-five million, eight hundred sixty-four thousand, three hundred seventy-nine".