551426 has 8 divisors (see below), whose sum is σ = 830844. Its totient is φ = 274480.

The previous prime is 551423. The next prime is 551443. The reversal of 551426 is 624155.

It can be written as a sum of positive squares in 2 ways, for example, as 491401 + 60025 = 701^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551423) 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, 116 + ... + 1056.

2⁵⁵¹⁴²⁶ is an apocalyptic number.

551426 is a deficient number, since it is larger than the sum of its proper divisors (279418).

551426 is a wasteful number, since it uses less digits than its factorization.

551426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its digits is 1200, while the sum is 23.

The square root of 551426 is about 742.5806353521. The cubic root of 551426 is about 82.0028751718.

The spelling of 551426 in words is "five hundred fifty-one thousand, four hundred twenty-six".