551894 has 16 divisors (see below), whose sum is σ = 960000. Its totient is φ = 233064.

The previous prime is 551861. The next prime is 551909. The reversal of 551894 is 498155.

551894 = 152² + 153² + ... + 172².

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 551894.

It is a congruent number.

It is an unprimeable number.

551894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2⁵⁵¹⁸⁹⁴ is an apocalyptic number.

551894 is a deficient number, since it is larger than the sum of its proper divisors (408106).

551894 is a wasteful number, since it uses less digits than its factorization.

551894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587.

The product of its digits is 7200, while the sum is 32.

The square root of 551894 is about 742.8956858133. The cubic root of 551894 is about 82.0260674609.

The spelling of 551894 in words is "five hundred fifty-one thousand, eight hundred ninety-four".