Adding to 551402 its reverse (204155), we get a palindrome (755557).
551402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
2551402 is an apocalyptic number.
551402 is a wasteful number, since it uses less digits than its factorization.
551402 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12012.
The square root of 551402 is about 742.5644753151. The cubic root of 551402 is about 82.0016854700.
The spelling of 551402 in words is "five hundred fifty-one thousand, four hundred two".