551455 has 4 divisors (see below), whose sum is σ = 661752. Its totient is φ = 441160.

The previous prime is 551443. The next prime is 551461. The reversal of 551455 is 554155.

551455 is nontrivially palindromic in base 15.

551455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 551455 - 2⁵ = 551423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55141 + ... + 55150.

It is an arithmetic number, because the mean of its divisors is an integer number (165438).

2⁵⁵¹⁴⁵⁵ is an apocalyptic number.

551455 is a deficient number, since it is larger than the sum of its proper divisors (110297).

551455 is a wasteful number, since it uses less digits than its factorization.

551455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110296.

The product of its digits is 2500, while the sum is 25.

The square root of 551455 is about 742.6001615944. The cubic root of 551455 is about 82.0043126822.

The spelling of 551455 in words is "five hundred fifty-one thousand, four hundred fifty-five".