551380 has 24 divisors (see below), whose sum is σ = 1219680. Its totient is φ = 208800.

The previous prime is 551363. The next prime is 551381. The reversal of 551380 is 83155.

551380 = T₁₅₁ + T₁₅₂ + ... + T₁₈₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 1105.

It is an arithmetic number, because the mean of its divisors is an integer number (50820).

2⁵⁵¹³⁸⁰ is an apocalyptic number.

It is an amenable number.

551380 is an abundant number, since it is smaller than the sum of its proper divisors (668300).

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

551380 is a wasteful number, since it uses less digits than its factorization.

551380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 551380 is about 742.5496616389. The cubic root of 551380 is about 82.0005948797. Note that the first 3 decimals are identical.

The spelling of 551380 in words is "five hundred fifty-one thousand, three hundred eighty".