552533991 has 16 divisors (see below), whose sum is σ = 769982976. Its totient is φ = 351772256.

The previous prime is 552533963. The next prime is 552534001. The reversal of 552533991 is 199335255.

It is a cyclic number.

It is not a de Polignac number, because 552533991 - 2⁵ = 552533959 is a prime.

It is a super-2 number, since 2×552533991² = 610587622420776162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552533911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38926 + ... + 51188.

It is an arithmetic number, because the mean of its divisors is an integer number (48123936).

Almost surely, 2^552533991 is an apocalyptic number.

552533991 is a deficient number, since it is larger than the sum of its proper divisors (217448985).

552533991 is a wasteful number, since it uses less digits than its factorization.

552533991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12942.

The product of its digits is 182250, while the sum is 42.

The square root of 552533991 is about 23506.0415850904. The cubic root of 552533991 is about 820.5776175134.

The spelling of 552533991 in words is "five hundred fifty-two million, five hundred thirty-three thousand, nine hundred ninety-one".