155243044 has 12 divisors (see below), whose sum is σ = 296373168. Its totient is φ = 70565000.

The previous prime is 155243017. The next prime is 155243047. The reversal of 155243044 is 440342551.

It is not an unprimeable number, because it can be changed into a prime (155243047) 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, 1764082 + ... + 1764169.

It is an arithmetic number, because the mean of its divisors is an integer number (24697764).

Almost surely, 2^155243044 is an apocalyptic number.

It is an amenable number.

155243044 is a deficient number, since it is larger than the sum of its proper divisors (141130124).

155243044 is a wasteful number, since it uses less digits than its factorization.

155243044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528266 (or 3528264 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 155243044 is about 12459.6566565857. The cubic root of 155243044 is about 537.4491535821.

Adding to 155243044 its reverse (440342551), we get a palindrome (595585595).

The spelling of 155243044 in words is "one hundred fifty-five million, two hundred forty-three thousand, forty-four".