553669 has 4 divisors (see below), whose sum is σ = 559980. Its totient is φ = 547360.

The previous prime is 553667. The next prime is 553681. The reversal of 553669 is 966355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56644 + 497025 = 238^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 553669 - 2¹ = 553667 is a prime.

It is a super-2 number, since 2×553669² = 613098723122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (139995).

2⁵⁵³⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

553669 is a deficient number, since it is larger than the sum of its proper divisors (6311).

553669 is an equidigital number, since it uses as much as digits as its factorization.

553669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310.

The product of its digits is 24300, while the sum is 34.

The square root of 553669 is about 744.0893763521. The cubic root of 553669 is about 82.1139106937.

Subtracting 553669 from its reverse (966355), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 553669 in words is "five hundred fifty-three thousand, six hundred sixty-nine".