5121773149 has 4 divisors (see below), whose sum is σ = 5122886140. Its totient is φ = 5120660160.

The previous prime is 5121773113. The next prime is 5121773161. The reversal of 5121773149 is 9413771215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9413771215 = 5 ⋅1882754243.

It can be written as a sum of positive squares in 2 ways, for example, as 1828161049 + 3293612100 = 42757^2 + 57390^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121773149 - 2⁷ = 5121773021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121773849) 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, 549564 + ... + 558805.

It is an arithmetic number, because the mean of its divisors is an integer number (1280721535).

Almost surely, 2^5121773149 is an apocalyptic number.

It is an amenable number.

5121773149 is a deficient number, since it is larger than the sum of its proper divisors (1112991).

5121773149 is a wasteful number, since it uses less digits than its factorization.

5121773149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112990.

The product of its digits is 52920, while the sum is 40.

The square root of 5121773149 is about 71566.5644627434. The cubic root of 5121773149 is about 1723.7466943592.

The spelling of 5121773149 in words is "five billion, one hundred twenty-one million, seven hundred seventy-three thousand, one hundred forty-nine".