5138751 has 4 divisors (see below), whose sum is σ = 6851672. Its totient is φ = 3425832.

The previous prime is 5138747. The next prime is 5138753. The reversal of 5138751 is 1578315.

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

It is not a de Polignac number, because 5138751 - 2² = 5138747 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5138753) 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, 856456 + ... + 856461.

It is an arithmetic number, because the mean of its divisors is an integer number (1712918).

Almost surely, 2^5138751 is an apocalyptic number.

5138751 is a deficient number, since it is larger than the sum of its proper divisors (1712921).

5138751 is a wasteful number, since it uses less digits than its factorization.

5138751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712920.

The product of its digits is 4200, while the sum is 30.

The square root of 5138751 is about 2266.8813378737. The cubic root of 5138751 is about 172.5649241016.

The spelling of 5138751 in words is "five million, one hundred thirty-eight thousand, seven hundred fifty-one".