5151749 has 4 divisors (see below), whose sum is σ = 5178636. Its totient is φ = 5124864.

The previous prime is 5151739. The next prime is 5151779. The reversal of 5151749 is 9471515.

5151749 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 390625 + 4761124 = 625^2 + 2182^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151749 - 2²⁰ = 4103173 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 (5151739) 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, 13154 + ... + 13539.

It is an arithmetic number, because the mean of its divisors is an integer number (1294659).

Almost surely, 2^5151749 is an apocalyptic number.

It is an amenable number.

5151749 is a deficient number, since it is larger than the sum of its proper divisors (26887).

5151749 is a wasteful number, since it uses less digits than its factorization.

5151749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26886.

The product of its digits is 6300, while the sum is 32.

The square root of 5151749 is about 2269.7464616120. The cubic root of 5151749 is about 172.7102973244.

The spelling of 5151749 in words is "five million, one hundred fifty-one thousand, seven hundred forty-nine".