5453021021 has 4 divisors (see below), whose sum is σ = 6232024032. Its totient is φ = 4674018012.

The previous prime is 5453021009. The next prime is 5453021027. The reversal of 5453021021 is 1201203545.

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 5453021021 - 2¹⁴ = 5453004637 is a prime.

It is a Duffinian number.

5453021021 is a modest number, since divided by 21021 gives 5453 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5453021027) 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, 389501495 + ... + 389501508.

It is an arithmetic number, because the mean of its divisors is an integer number (1558006008).

Almost surely, 2^5453021021 is an apocalyptic number.

It is an amenable number.

5453021021 is a deficient number, since it is larger than the sum of its proper divisors (779003011).

5453021021 is an equidigital number, since it uses as much as digits as its factorization.

5453021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779003010.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5453021021 is about 73844.5734025189. The cubic root of 5453021021 is about 1760.1339667524.

Adding to 5453021021 its reverse (1201203545), we get a palindrome (6654224566).

The spelling of 5453021021 in words is "five billion, four hundred fifty-three million, twenty-one thousand, twenty-one".