2552543021 has 4 divisors (see below), whose sum is σ = 2917192032. Its totient is φ = 2187894012.

The previous prime is 2552542981. The next prime is 2552543029. The reversal of 2552543021 is 1203452552.

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 a cyclic number.

It is not a de Polignac number, because 2552543021 - 2⁶ = 2552542957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2552543029) 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, 182324495 + ... + 182324508.

It is an arithmetic number, because the mean of its divisors is an integer number (729298008).

Almost surely, 2^2552543021 is an apocalyptic number.

It is an amenable number.

2552543021 is a deficient number, since it is larger than the sum of its proper divisors (364649011).

2552543021 is an equidigital number, since it uses as much as digits as its factorization.

2552543021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364649010.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2552543021 is about 50522.6980772009. The cubic root of 2552543021 is about 1366.6512098655.

Adding to 2552543021 its reverse (1203452552), we get a palindrome (3755995573).

The spelling of 2552543021 in words is "two billion, five hundred fifty-two million, five hundred forty-three thousand, twenty-one".