555161 has 8 divisors (see below), whose sum is σ = 595200. Its totient is φ = 516240.

The previous prime is 555143. The next prime is 555167. The reversal of 555161 is 161555.

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 555161 - 2⁶ = 555097 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555167) 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, 920 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (74400).

2⁵⁵⁵¹⁶¹ is an apocalyptic number.

It is an amenable number.

555161 is a deficient number, since it is larger than the sum of its proper divisors (40039).

555161 is a wasteful number, since it uses less digits than its factorization.

555161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its digits is 750, while the sum is 23.

The square root of 555161 is about 745.0912695771. The cubic root of 555161 is about 82.1876033819.

The spelling of 555161 in words is "five hundred fifty-five thousand, one hundred sixty-one".