155552223 has 8 divisors (see below), whose sum is σ = 207524736. Its totient is φ = 103640600.

The previous prime is 155552167. The next prime is 155552249. The reversal of 155552223 is 322255551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155552223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155552323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (25940592).

Almost surely, 2^155552223 is an apocalyptic number.

155552223 is a deficient number, since it is larger than the sum of its proper divisors (51972513).

155552223 is a wasteful number, since it uses less digits than its factorization.

155552223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445.

The product of its digits is 15000, while the sum is 30.

The square root of 155552223 is about 12472.0576890904. The cubic root of 155552223 is about 537.8057080470.

The spelling of 155552223 in words is "one hundred fifty-five million, five hundred fifty-two thousand, two hundred twenty-three".