155351222 has 12 divisors (see below), whose sum is σ = 252331380. Its totient is φ = 71700408.

The previous prime is 155351213. The next prime is 155351257. The reversal of 155351222 is 222153551.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 155351191 and 155351200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229472 + ... + 230147.

It is an arithmetic number, because the mean of its divisors is an integer number (21027615).

Almost surely, 2^155351222 is an apocalyptic number.

155351222 is a deficient number, since it is larger than the sum of its proper divisors (96980158).

155351222 is a wasteful number, since it uses less digits than its factorization.

155351222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459647 (or 459634 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 155351222 is about 12463.9970314502. The cubic root of 155351222 is about 537.5739614826.

The spelling of 155351222 in words is "one hundred fifty-five million, three hundred fifty-one thousand, two hundred twenty-two".