551156 has 12 divisors (see below), whose sum is σ = 970368. Its totient is φ = 273912.

The previous prime is 551143. The next prime is 551179. The reversal of 551156 is 651155.

It is a congruent number.

It is an unprimeable number.

551156 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 in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (80864).

2⁵⁵¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

551156 is a deficient number, since it is larger than the sum of its proper divisors (419212).

551156 is a wasteful number, since it uses less digits than its factorization.

551156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

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

The square root of 551156 is about 742.3988146542. The cubic root of 551156 is about 81.9894890354.

Subtracting 551156 from its reverse (651155), we obtain a palindrome (99999).

It can be divided in two parts, 551 and 156, that added together give a palindrome (707).

The spelling of 551156 in words is "five hundred fifty-one thousand, one hundred fifty-six".