155223022 has 16 divisors (see below), whose sum is σ = 255033360. Its totient is φ = 70526848.

The previous prime is 155223011. The next prime is 155223023. The reversal of 155223022 is 220322551.

It is a junction number, because it is equal to n+sod(n) for n = 155222984 and 155223002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155223023) 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, 77728 + ... + 79699.

It is an arithmetic number, because the mean of its divisors is an integer number (15939585).

Almost surely, 2^155223022 is an apocalyptic number.

155223022 is a deficient number, since it is larger than the sum of its proper divisors (99810338).

155223022 is a wasteful number, since it uses less digits than its factorization.

155223022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157475.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 155223022 is about 12458.8531574941. The cubic root of 155223022 is about 537.4260472981.

Adding to 155223022 its reverse (220322551), we get a palindrome (375545573).

The spelling of 155223022 in words is "one hundred fifty-five million, two hundred twenty-three thousand, twenty-two".