551245 has 8 divisors (see below), whose sum is σ = 677880. Its totient is φ = 430080.

The previous prime is 551233. The next prime is 551269. The reversal of 551245 is 542155.

551245 = 38² + 39² + ... + 119².

It can be written as a sum of positive squares in 4 ways, for example, as 35721 + 515524 = 189^2 + 718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551245 - 2⁹ = 550733 is a prime.

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, 1140 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (84735).

2⁵⁵¹²⁴⁵ is an apocalyptic number.

It is an amenable number.

551245 is a deficient number, since it is larger than the sum of its proper divisors (126635).

551245 is a wasteful number, since it uses less digits than its factorization.

551245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735.

The product of its digits is 1000, while the sum is 22.

The square root of 551245 is about 742.4587530631. The cubic root of 551245 is about 81.9939019856.

The spelling of 551245 in words is "five hundred fifty-one thousand, two hundred forty-five".