155002222 has 32 divisors (see below), whose sum is σ = 245216160. Its totient is φ = 73413120.

The previous prime is 155002163. The next prime is 155002231. The reversal of 155002222 is 222200551.

155002222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 155002222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488808 + ... + 489124.

It is an arithmetic number, because the mean of its divisors is an integer number (7663005).

Almost surely, 2^155002222 is an apocalyptic number.

155002222 is a deficient number, since it is larger than the sum of its proper divisors (90213938).

155002222 is a wasteful number, since it uses less digits than its factorization.

155002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 155002222 is about 12449.9888353364. The cubic root of 155002222 is about 537.1711023392.

Adding to 155002222 its reverse (222200551), we get a palindrome (377202773).

The spelling of 155002222 in words is "one hundred fifty-five million, two thousand, two hundred twenty-two".