155194227 has 6 divisors (see below), whose sum is σ = 224169452. Its totient is φ = 103462812.

The previous prime is 155194219. The next prime is 155194289. The reversal of 155194227 is 722491551.

It is not a de Polignac number, because 155194227 - 2³ = 155194219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155194191 and 155194200.

It is not an unprimeable number, because it can be changed into a prime (155194217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8621893 + ... + 8621910.

Almost surely, 2^155194227 is an apocalyptic number.

155194227 is a deficient number, since it is larger than the sum of its proper divisors (68975225).

155194227 is a wasteful number, since it uses less digits than its factorization.

155194227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17243809 (or 17243806 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 155194227 is about 12457.6974999395. The cubic root of 155194227 is about 537.3928130956.

The spelling of 155194227 in words is "one hundred fifty-five million, one hundred ninety-four thousand, two hundred twenty-seven".