555145 has 4 divisors (see below), whose sum is σ = 666180. Its totient is φ = 444112.

The previous prime is 555143. The next prime is 555167. The reversal of 555145 is 541555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 447561 = 328^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 555145 - 2¹ = 555143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55510 + ... + 55519.

It is an arithmetic number, because the mean of its divisors is an integer number (166545).

2⁵⁵⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

555145 is a deficient number, since it is larger than the sum of its proper divisors (111035).

555145 is a wasteful number, since it uses less digits than its factorization.

555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111034.

The product of its digits is 2500, while the sum is 25.

The square root of 555145 is about 745.0805325601. The cubic root of 555145 is about 82.1868138126.

The spelling of 555145 in words is "five hundred fifty-five thousand, one hundred forty-five".