552421 has 8 divisors (see below), whose sum is σ = 586080. Its totient is φ = 519792.

The previous prime is 552403. The next prime is 552469. The reversal of 552421 is 124255.

552421 = T₁₀₈ + T₁₀₉ + ... + T₁₆₅.

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

It is a cyclic number.

It is not a de Polignac number, because 552421 - 2⁹ = 551909 is a prime.

It is a super-2 number, since 2×552421² = 610337922482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026 + ... + 1468.

It is an arithmetic number, because the mean of its divisors is an integer number (73260).

2⁵⁵²⁴²¹ is an apocalyptic number.

It is an amenable number.

552421 is a deficient number, since it is larger than the sum of its proper divisors (33659).

552421 is a wasteful number, since it uses less digits than its factorization.

552421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its digits is 400, while the sum is 19.

The square root of 552421 is about 743.2502943154. The cubic root of 552421 is about 82.0521678749.

Adding to 552421 its reverse (124255), we get a palindrome (676676).

The spelling of 552421 in words is "five hundred fifty-two thousand, four hundred twenty-one".