5121511205 has 8 divisors (see below), whose sum is σ = 6507331992. Its totient is φ = 3856196608.

The previous prime is 5121511193. The next prime is 5121511249. The reversal of 5121511205 is 5021151215.

It can be written as a sum of positive squares in 4 ways, for example, as 1747992481 + 3373518724 = 41809^2 + 58082^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5121511205 - 2⁸ = 5121510949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30126452 + ... + 30126621.

It is an arithmetic number, because the mean of its divisors is an integer number (813416499).

Almost surely, 2^5121511205 is an apocalyptic number.

It is an amenable number.

5121511205 is a deficient number, since it is larger than the sum of its proper divisors (1385820787).

5121511205 is a wasteful number, since it uses less digits than its factorization.

5121511205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60253095.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 5121511205 is about 71564.7343668654. The cubic root of 5121511205 is about 1723.7173078695.

The spelling of 5121511205 in words is "five billion, one hundred twenty-one million, five hundred eleven thousand, two hundred five".