550155 has 8 divisors (see below), whose sum is σ = 880272. Its totient is φ = 293408.

The previous prime is 550139. The next prime is 550163. The reversal of 550155 is 551055.

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

It is a cyclic number.

It is not a de Polignac number, because 550155 - 2⁴ = 550139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18324 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (110034).

2⁵⁵⁰¹⁵⁵ is an apocalyptic number.

550155 is a deficient number, since it is larger than the sum of its proper divisors (330117).

550155 is a wasteful number, since it uses less digits than its factorization.

550155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36685.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 550155 is about 741.7243423267. The cubic root of 550155 is about 81.9398229915.

Subtracting 550155 from its reverse (551055), we obtain a square (900 = 30²).

The spelling of 550155 in words is "five hundred fifty thousand, one hundred fifty-five".