155844442 has 16 divisors (see below), whose sum is σ = 252887040. Its totient is φ = 71602992.

The previous prime is 155844431. The next prime is 155844449. The reversal of 155844442 is 244448551.

It is not an unprimeable number, because it can be changed into a prime (155844449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7642 + ... + 19237.

It is an arithmetic number, because the mean of its divisors is an integer number (15805440).

Almost surely, 2^155844442 is an apocalyptic number.

155844442 is a deficient number, since it is larger than the sum of its proper divisors (97042598).

155844442 is a wasteful number, since it uses less digits than its factorization.

155844442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27117.

The product of its digits is 102400, while the sum is 37.

The square root of 155844442 is about 12483.7671397700. The cubic root of 155844442 is about 538.1422696949.

The spelling of 155844442 in words is "one hundred fifty-five million, eight hundred forty-four thousand, four hundred forty-two".