2552221533 has 4 divisors (see below), whose sum is σ = 3402962048. Its totient is φ = 1701481020.

The previous prime is 2552221513. The next prime is 2552221549. The reversal of 2552221533 is 3351222552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2552221533 - 2¹⁰ = 2552220509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2552221533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2552221513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425370253 + ... + 425370258.

It is an arithmetic number, because the mean of its divisors is an integer number (850740512).

Almost surely, 2^2552221533 is an apocalyptic number.

It is an amenable number.

2552221533 is a deficient number, since it is larger than the sum of its proper divisors (850740515).

2552221533 is an equidigital number, since it uses as much as digits as its factorization.

2552221533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850740514.

The product of its digits is 18000, while the sum is 30.

The square root of 2552221533 is about 50519.5163575425. The cubic root of 2552221533 is about 1366.5938317387.

The spelling of 2552221533 in words is "two billion, five hundred fifty-two million, two hundred twenty-one thousand, five hundred thirty-three".