5208553121 has 4 divisors (see below), whose sum is σ = 5335591044. Its totient is φ = 5081515200.

The previous prime is 5208553093. The next prime is 5208553123. The reversal of 5208553121 is 1213558025.

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 186704896 + 5021848225 = 13664^2 + 70865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5208553121 is a prime.

It is a super-2 number, since 2×5208553121² = 54258051228557681282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5208553123) 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, 63518900 + ... + 63518981.

It is an arithmetic number, because the mean of its divisors is an integer number (1333897761).

Almost surely, 2^5208553121 is an apocalyptic number.

It is an amenable number.

5208553121 is a deficient number, since it is larger than the sum of its proper divisors (127037923).

5208553121 is a wasteful number, since it uses less digits than its factorization.

5208553121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127037922.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 5208553121 is about 72170.3063662612. The cubic root of 5208553121 is about 1733.4275682947.

The spelling of 5208553121 in words is "five billion, two hundred eight million, five hundred fifty-three thousand, one hundred twenty-one".