551158 has 4 divisors (see below), whose sum is σ = 826740. Its totient is φ = 275578.

The previous prime is 551143. The next prime is 551179. The reversal of 551158 is 851155.

551158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851155 = 5 ⋅170231.

It is a congruent number.

It is an unprimeable number.

551158 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137788 + ... + 137791.

It is an arithmetic number, because the mean of its divisors is an integer number (206685).

2⁵⁵¹¹⁵⁸ is an apocalyptic number.

551158 is a deficient number, since it is larger than the sum of its proper divisors (275582).

551158 is a wasteful number, since it uses less digits than its factorization.

551158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275581.

The product of its digits is 1000, while the sum is 25.

The square root of 551158 is about 742.4001616379. The cubic root of 551158 is about 81.9895882081.

The spelling of 551158 in words is "five hundred fifty-one thousand, one hundred fifty-eight".