552661 has 4 divisors (see below), whose sum is σ = 554400. Its totient is φ = 550924.

The previous prime is 552659. The next prime is 552677. The reversal of 552661 is 166255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 552661 - 2¹ = 552659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 241 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

2⁵⁵²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

552661 is a deficient number, since it is larger than the sum of its proper divisors (1739).

552661 is a wasteful number, since it uses less digits than its factorization.

552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738.

The product of its digits is 1800, while the sum is 25.

The square root of 552661 is about 743.4117297972. The cubic root of 552661 is about 82.0640487104.

The spelling of 552661 in words is "five hundred fifty-two thousand, six hundred sixty-one".