551390 has 16 divisors (see below), whose sum is σ = 1134432. Its totient is φ = 189024.

The previous prime is 551387. The next prime is 551407. The reversal of 551390 is 93155.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551390.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3869 + ... + 4008.

It is an arithmetic number, because the mean of its divisors is an integer number (70902).

2⁵⁵¹³⁹⁰ is an apocalyptic number.

551390 is an abundant number, since it is smaller than the sum of its proper divisors (583042).

It is a weird number, because it is abundant, but not a pseudoperfect number.

551390 is a wasteful number, since it uses less digits than its factorization.

551390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 551390 is about 742.5563951647. The cubic root of 551390 is about 82.0010906062.

The spelling of 551390 in words is "five hundred fifty-one thousand, three hundred ninety".