551478 has 16 divisors (see below), whose sum is σ = 1114560. Its totient is φ = 181896.

The previous prime is 551461. The next prime is 551483. The reversal of 551478 is 874155.

551478 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (69660).

2⁵⁵¹⁴⁷⁸ is an apocalyptic number.

551478 is an abundant number, since it is smaller than the sum of its proper divisors (563082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551478 is a wasteful number, since it uses less digits than its factorization.

551478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its digits is 5600, while the sum is 30.

The square root of 551478 is about 742.6156475594. The cubic root of 551478 is about 82.0054527407.

It can be divided in two parts, 55147 and 8, that added together give a palindrome (55155).

The spelling of 551478 in words is "five hundred fifty-one thousand, four hundred seventy-eight".