155079222 has 8 divisors (see below), whose sum is σ = 310158456. Its totient is φ = 51693072.

The previous prime is 155079191. The next prime is 155079251. The reversal of 155079222 is 222970551.

It is a happy number.

155079222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

155079222 is an admirable number.

It is a super-2 number, since 2×155079222² = 48099130192250568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12923263 + ... + 12923274.

It is an arithmetic number, because the mean of its divisors is an integer number (38769807).

Almost surely, 2^155079222 is an apocalyptic number.

155079222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155079222 is a wasteful number, since it uses less digits than its factorization.

155079222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25846542.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 155079222 is about 12453.0808236356. The cubic root of 155079222 is about 537.2600372527.

The spelling of 155079222 in words is "one hundred fifty-five million, seventy-nine thousand, two hundred twenty-two".