551346 has 16 divisors (see below), whose sum is σ = 1128864. Its totient is φ = 179424.

The previous prime is 551339. The next prime is 551347. The reversal of 551346 is 643155.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551346.

It is not an unprimeable number, because it can be changed into a prime (551347) by changing a digit.

551346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (70554).

2⁵⁵¹³⁴⁶ is an apocalyptic number.

551346 is an abundant number, since it is smaller than the sum of its proper divisors (577518).

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

551346 is a wasteful number, since it uses less digits than its factorization.

551346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185.

The product of its digits is 1800, while the sum is 24.

The square root of 551346 is about 742.5267671943. The cubic root of 551346 is about 81.9989093648.

Subtracting 551346 from its reverse (643155), we obtain a square (91809 = 303²).

The spelling of 551346 in words is "five hundred fifty-one thousand, three hundred forty-six".