5254320021 has 32 divisors (see below), whose sum is σ = 7791206400. Its totient is φ = 3135867840.

The previous prime is 5254320017. The next prime is 5254320053. The reversal of 5254320021 is 1200234525.

It is not a de Polignac number, because 5254320021 - 2² = 5254320017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5254319973 and 5254320000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5254320091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43876 + ... + 111506.

It is an arithmetic number, because the mean of its divisors is an integer number (243475200).

Almost surely, 2^5254320021 is an apocalyptic number.

It is an amenable number.

5254320021 is a deficient number, since it is larger than the sum of its proper divisors (2536886379).

5254320021 is a wasteful number, since it uses less digits than its factorization.

5254320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67729.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 5254320021 is about 72486.6885779727. The cubic root of 5254320021 is about 1738.4899062893.

Adding to 5254320021 its reverse (1200234525), we get a palindrome (6454554546).

The spelling of 5254320021 in words is "five billion, two hundred fifty-four million, three hundred twenty thousand, twenty-one".