5125451993 has 4 divisors (see below), whose sum is σ = 5127410148. Its totient is φ = 5123493840.

The previous prime is 5125451971. The next prime is 5125451999. The reversal of 5125451993 is 3991545215.

5125451993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4174839769 + 950612224 = 64613^2 + 30832^2 .

It is a cyclic number.

It is not a de Polignac number, because 5125451993 - 2²⁸ = 4857016537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5125451999) 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, 975146 + ... + 980387.

It is an arithmetic number, because the mean of its divisors is an integer number (1281852537).

Almost surely, 2^5125451993 is an apocalyptic number.

It is an amenable number.

5125451993 is a deficient number, since it is larger than the sum of its proper divisors (1958155).

5125451993 is a wasteful number, since it uses less digits than its factorization.

5125451993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958154.

The product of its digits is 243000, while the sum is 44.

The square root of 5125451993 is about 71592.2621028278. The cubic root of 5125451993 is about 1724.1593039064.

The spelling of 5125451993 in words is "five billion, one hundred twenty-five million, four hundred fifty-one thousand, nine hundred ninety-three".