2552052221 has 4 divisors (see below), whose sum is σ = 2552413344. Its totient is φ = 2551691100.

The previous prime is 2552052169. The next prime is 2552052233. The reversal of 2552052221 is 1222502552.

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 a de Polignac number, because none of the positive numbers 2^k-2552052221 is a prime.

It is a super-2 number, since 2×2552052221² = 13025941077422065682, 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 (2552052281) 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, 169745 + ... + 184166.

It is an arithmetic number, because the mean of its divisors is an integer number (638103336).

Almost surely, 2^2552052221 is an apocalyptic number.

It is an amenable number.

2552052221 is a deficient number, since it is larger than the sum of its proper divisors (361123).

2552052221 is an equidigital number, since it uses as much as digits as its factorization.

2552052221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361122.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2552052221 is about 50517.8406209133. The cubic root of 2552052221 is about 1366.5636115497.

Adding to 2552052221 its reverse (1222502552), we get a palindrome (3774554773).

The spelling of 2552052221 in words is "two billion, five hundred fifty-two million, fifty-two thousand, two hundred twenty-one".