155533222 has 16 divisors (see below), whose sum is σ = 262170720. Its totient is φ = 68663232.

The previous prime is 155533211. The next prime is 155533229. The reversal of 155533222 is 222335551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155533229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129447 + ... + 130642.

It is an arithmetic number, because the mean of its divisors is an integer number (16385670).

Almost surely, 2^155533222 is an apocalyptic number.

155533222 is a deficient number, since it is larger than the sum of its proper divisors (106637498).

155533222 is a wasteful number, since it uses less digits than its factorization.

155533222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260127.

The product of its digits is 9000, while the sum is 28.

The square root of 155533222 is about 12471.2959230386. The cubic root of 155533222 is about 537.7838091585.

Adding to 155533222 its reverse (222335551), we get a palindrome (377868773).

The spelling of 155533222 in words is "one hundred fifty-five million, five hundred thirty-three thousand, two hundred twenty-two".