551930 has 16 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 218112.

The previous prime is 551927. The next prime is 551933. The reversal of 551930 is 39155.

It is an interprime number because it is at equal distance from previous prime (551927) and next prime (551933).

It can be written as a sum of positive squares in 4 ways, for example, as 337561 + 214369 = 581^2 + 463^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551896 and 551905.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551930.

It is not an unprimeable number, because it can be changed into a prime (551933) 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, 686 + ... + 1254.

2⁵⁵¹⁹³⁰ is an apocalyptic number.

551930 is a deficient number, since it is larger than the sum of its proper divisors (453550).

551930 is a wasteful number, since it uses less digits than its factorization.

551930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

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

The square root of 551930 is about 742.9199149303. The cubic root of 551930 is about 82.0278509400.

The spelling of 551930 in words is "five hundred fifty-one thousand, nine hundred thirty".