551956 has 12 divisors (see below), whose sum is σ = 1022868. Its totient is φ = 259712.

The previous prime is 551951. The next prime is 551959. The reversal of 551956 is 659155.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 84100 = 684^2 + 290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3991 + ... + 4126.

It is an arithmetic number, because the mean of its divisors is an integer number (85239).

2⁵⁵¹⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

551956 is a deficient number, since it is larger than the sum of its proper divisors (470912).

551956 is a wasteful number, since it uses less digits than its factorization.

551956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138 (or 8136 counting only the distinct ones).

The product of its digits is 6750, while the sum is 31.

The square root of 551956 is about 742.9374132456. The cubic root of 551956 is about 82.0291389600.

The spelling of 551956 in words is "five hundred fifty-one thousand, nine hundred fifty-six".