552541021 has 8 divisors (see below), whose sum is σ = 588972600. Its totient is φ = 516546048.

The previous prime is 552541009. The next prime is 552541037. The reversal of 552541021 is 120145255.

It can be written as a sum of positive squares in 4 ways, for example, as 125664100 + 426876921 = 11210^2 + 20661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 552541021 - 2²¹ = 550443869 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 (552541081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106536 + ... + 111601.

It is an arithmetic number, because the mean of its divisors is an integer number (73621575).

Almost surely, 2^552541021 is an apocalyptic number.

It is an amenable number.

552541021 is a deficient number, since it is larger than the sum of its proper divisors (36431579).

552541021 is a wasteful number, since it uses less digits than its factorization.

552541021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218303.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 552541021 is about 23506.1911206388. The cubic root of 552541021 is about 820.5810976228.

Adding to 552541021 its reverse (120145255), we get a palindrome (672686276).

The spelling of 552541021 in words is "five hundred fifty-two million, five hundred forty-one thousand, twenty-one".