155023244 has 12 divisors (see below), whose sum is σ = 273088368. Its totient is φ = 76998000.

The previous prime is 155023217. The next prime is 155023247. The reversal of 155023244 is 442320551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155023247) 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, 127727 + ... + 128934.

It is an arithmetic number, because the mean of its divisors is an integer number (22757364).

Almost surely, 2^155023244 is an apocalyptic number.

It is an amenable number.

155023244 is a deficient number, since it is larger than the sum of its proper divisors (118065124).

155023244 is a wasteful number, since it uses less digits than its factorization.

155023244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256816 (or 256814 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 155023244 is about 12450.8330644981. The cubic root of 155023244 is about 537.1953856479.

Adding to 155023244 its reverse (442320551), we get a palindrome (597343795).

The spelling of 155023244 in words is "one hundred fifty-five million, twenty-three thousand, two hundred forty-four".