155022222 has 16 divisors (see below), whose sum is σ = 310385232. Its totient is φ = 51617280.

The previous prime is 155022221. The next prime is 155022223. The reversal of 155022222 is 222220551.

It is an interprime number because it is at equal distance from previous prime (155022221) and next prime (155022223).

155022222 is a modest number, since divided by 22222 gives 1550 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155022221) 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, 8083 + ... + 19374.

It is an arithmetic number, because the mean of its divisors is an integer number (19399077).

Almost surely, 2^155022222 is an apocalyptic number.

155022222 is an abundant number, since it is smaller than the sum of its proper divisors (155363010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155022222 is a wasteful number, since it uses less digits than its factorization.

155022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28403.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 155022222 is about 12450.7920230000. The cubic root of 155022222 is about 537.1942051478.

Adding to 155022222 its reverse (222220551), we get a palindrome (377242773).

The spelling of 155022222 in words is "one hundred fifty-five million, twenty-two thousand, two hundred twenty-two".