155193656 has 16 divisors (see below), whose sum is σ = 293709240. Its totient is φ = 76871200.

The previous prime is 155193631. The next prime is 155193667. The reversal of 155193656 is 656391551.

It is a happy number.

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, 89795 + ... + 91506.

Almost surely, 2^155193656 is an apocalyptic number.

It is an amenable number.

155193656 is a deficient number, since it is larger than the sum of its proper divisors (138515584).

155193656 is a wasteful number, since it uses less digits than its factorization.

155193656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181414 (or 181410 counting only the distinct ones).

The product of its digits is 121500, while the sum is 41.

The square root of 155193656 is about 12457.6745823609. The cubic root of 155193656 is about 537.3921540254.

The spelling of 155193656 in words is "one hundred fifty-five million, one hundred ninety-three thousand, six hundred fifty-six".