552560921 has 4 divisors (see below), whose sum is σ = 602793744. Its totient is φ = 502328100.

The previous prime is 552560917. The next prime is 552560933. The reversal of 552560921 is 129065255.

552560921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 552560921 - 2² = 552560917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552560951) 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, 25116395 + ... + 25116416.

It is an arithmetic number, because the mean of its divisors is an integer number (150698436).

Almost surely, 2^552560921 is an apocalyptic number.

It is an amenable number.

552560921 is a deficient number, since it is larger than the sum of its proper divisors (50232823).

552560921 is a wasteful number, since it uses less digits than its factorization.

552560921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50232822.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 552560921 is about 23506.6144095657. The cubic root of 552560921 is about 820.5909486970.

The spelling of 552560921 in words is "five hundred fifty-two million, five hundred sixty thousand, nine hundred twenty-one".