5255411021 has 4 divisors (see below), whose sum is σ = 6006184032. Its totient is φ = 4504638012.

The previous prime is 5255411011. The next prime is 5255411071. The reversal of 5255411021 is 1201145525.

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 5255411021 - 2¹⁰ = 5255409997 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 (5255411011) 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, 375386495 + ... + 375386508.

It is an arithmetic number, because the mean of its divisors is an integer number (1501546008).

Almost surely, 2^5255411021 is an apocalyptic number.

It is an amenable number.

5255411021 is a deficient number, since it is larger than the sum of its proper divisors (750773011).

5255411021 is an equidigital number, since it uses as much as digits as its factorization.

5255411021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750773010.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 5255411021 is about 72494.2137070263. The cubic root of 5255411021 is about 1738.6102238705.

Adding to 5255411021 its reverse (1201145525), we get a palindrome (6456556546).

The spelling of 5255411021 in words is "five billion, two hundred fifty-five million, four hundred eleven thousand, twenty-one".