551458 has 4 divisors (see below), whose sum is σ = 827190. Its totient is φ = 275728.

The previous prime is 551443. The next prime is 551461. The reversal of 551458 is 854155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 351649 + 199809 = 593^2 + 447^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 137863 + ... + 137866.

2⁵⁵¹⁴⁵⁸ is an apocalyptic number.

551458 is a deficient number, since it is larger than the sum of its proper divisors (275732).

551458 is a wasteful number, since it uses less digits than its factorization.

551458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275731.

The product of its digits is 4000, while the sum is 28.

The square root of 551458 is about 742.6021815212. The cubic root of 551458 is about 82.0044613872.

The spelling of 551458 in words is "five hundred fifty-one thousand, four hundred fifty-eight".