155162223 has 40 divisors (see below), whose sum is σ = 243424896. Its totient is φ = 98366400.

The previous prime is 155162219. The next prime is 155162233. The reversal of 155162223 is 322261551.

It is a happy number.

155162223 is a `hidden beast` number, since 15 + 5 + 1 + 622 + 23 = 666.

It is not a de Polignac number, because 155162223 - 2² = 155162219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155162233) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 152665 + ... + 153677.

Almost surely, 2^155162223 is an apocalyptic number.

155162223 is a deficient number, since it is larger than the sum of its proper divisors (88262673).

155162223 is a wasteful number, since it uses less digits than its factorization.

155162223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1108 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 155162223 is about 12456.4129266816. The cubic root of 155162223 is about 537.3558703512.

The spelling of 155162223 in words is "one hundred fifty-five million, one hundred sixty-two thousand, two hundred twenty-three".