552533521 has 4 divisors (see below), whose sum is σ = 552737844. Its totient is φ = 552329200.

The previous prime is 552533497. The next prime is 552533537. The reversal of 552533521 is 125335255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125335255 = 5 ⋅25067051.

It can be written as a sum of positive squares in 2 ways, for example, as 292033921 + 260499600 = 17089^2 + 16140^2 .

It is a cyclic number.

It is not a de Polignac number, because 552533521 - 2²⁵ = 518979089 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552533591) 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, 98050 + ... + 103531.

It is an arithmetic number, because the mean of its divisors is an integer number (138184461).

Almost surely, 2^552533521 is an apocalyptic number.

It is an amenable number.

552533521 is a deficient number, since it is larger than the sum of its proper divisors (204323).

552533521 is a wasteful number, since it uses less digits than its factorization.

552533521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204322.

The product of its digits is 22500, while the sum is 31.

The square root of 552533521 is about 23506.0315876585. The cubic root of 552533521 is about 820.5773848450.

Adding to 552533521 its reverse (125335255), we get a palindrome (677868776).

The spelling of 552533521 in words is "five hundred fifty-two million, five hundred thirty-three thousand, five hundred twenty-one".