155891446 has 16 divisors (see below), whose sum is σ = 238393584. Its totient is φ = 76437504.

The previous prime is 155891431. The next prime is 155891459. The reversal of 155891446 is 644198551.

155891446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28726 + ... + 33718.

It is an arithmetic number, because the mean of its divisors is an integer number (14899599).

Almost surely, 2^155891446 is an apocalyptic number.

155891446 is a deficient number, since it is larger than the sum of its proper divisors (82502138).

155891446 is a wasteful number, since it uses less digits than its factorization.

155891446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295.

The product of its digits is 172800, while the sum is 43.

The square root of 155891446 is about 12485.6496026438. The cubic root of 155891446 is about 538.1963670078.

The spelling of 155891446 in words is "one hundred fifty-five million, eight hundred ninety-one thousand, four hundred forty-six".