552305521 has 4 divisors (see below), whose sum is σ = 560084544. Its totient is φ = 544526500.

The previous prime is 552305497. The next prime is 552305539. The reversal of 552305521 is 125503255.

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 552305521 - 2¹⁹ = 551781233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 552305521.

It is not an unprimeable number, because it can be changed into a prime (552305561) 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, 3889405 + ... + 3889546.

It is an arithmetic number, because the mean of its divisors is an integer number (140021136).

Almost surely, 2^552305521 is an apocalyptic number.

It is an amenable number.

552305521 is a deficient number, since it is larger than the sum of its proper divisors (7779023).

552305521 is an equidigital number, since it uses as much as digits as its factorization.

552305521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779022.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 552305521 is about 23501.1812681831. The cubic root of 552305521 is about 820.4645003613.

Adding to 552305521 its reverse (125503255), we get a palindrome (677808776).

It can be divided in two parts, 552305 and 521, that added together give a triangular number (552826 = T₁₀₅₁).

The spelling of 552305521 in words is "five hundred fifty-two million, three hundred five thousand, five hundred twenty-one".