552043561 has 4 divisors (see below), whose sum is σ = 553485312. Its totient is φ = 550601812.

The previous prime is 552043553. The next prime is 552043571. The reversal of 552043561 is 165340255.

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 552043561 - 2³ = 552043553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552043501) 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, 720301 + ... + 721066.

It is an arithmetic number, because the mean of its divisors is an integer number (138371328).

Almost surely, 2^552043561 is an apocalyptic number.

It is an amenable number.

552043561 is a deficient number, since it is larger than the sum of its proper divisors (1441751).

552043561 is a wasteful number, since it uses less digits than its factorization.

552043561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441750.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 552043561 is about 23495.6072702963. The cubic root of 552043561 is about 820.3347636716.

The spelling of 552043561 in words is "five hundred fifty-two million, forty-three thousand, five hundred sixty-one".