5120421353 has 4 divisors (see below), whose sum is σ = 5173209300. Its totient is φ = 5067633408.

The previous prime is 5120421347. The next prime is 5120421389. The reversal of 5120421353 is 3531240215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2960774569 + 2159646784 = 54413^2 + 46472^2 .

It is a cyclic number.

It is not a de Polignac number, because 5120421353 - 2⁶ = 5120421289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5120420353) 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, 26393828 + ... + 26394021.

It is an arithmetic number, because the mean of its divisors is an integer number (1293302325).

Almost surely, 2^5120421353 is an apocalyptic number.

It is an amenable number.

5120421353 is a deficient number, since it is larger than the sum of its proper divisors (52787947).

5120421353 is an equidigital number, since it uses as much as digits as its factorization.

5120421353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52787946.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 5120421353 is about 71557.1195130156. The cubic root of 5120421353 is about 1723.5950308078.

Adding to 5120421353 its reverse (3531240215), we get a palindrome (8651661568).

The spelling of 5120421353 in words is "five billion, one hundred twenty million, four hundred twenty-one thousand, three hundred fifty-three".