552147621 has 8 divisors (see below), whose sum is σ = 736860384. Its totient is φ = 367766640.

The previous prime is 552147601. The next prime is 552147647. The reversal of 552147621 is 126741255.

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

It is not a de Polignac number, because 552147621 - 2⁹ = 552147109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552147601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79035 + ... + 85736.

It is an arithmetic number, because the mean of its divisors is an integer number (92107548).

Almost surely, 2^552147621 is an apocalyptic number.

It is an amenable number.

552147621 is a deficient number, since it is larger than the sum of its proper divisors (184712763).

552147621 is a wasteful number, since it uses less digits than its factorization.

552147621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165891.

The product of its digits is 16800, while the sum is 33.

The square root of 552147621 is about 23497.8216224398. The cubic root of 552147621 is about 820.3863046963.

Adding to 552147621 its reverse (126741255), we get a palindrome (678888876).

It can be divided in two parts, 55214 and 7621, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 552147621 in words is "five hundred fifty-two million, one hundred forty-seven thousand, six hundred twenty-one".