5121749 has 2 divisors, whose sum is σ = 5121750. Its totient is φ = 5121748.

The previous prime is 5121737. The next prime is 5121751. The reversal of 5121749 is 9471215.

5121749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3478225 + 1643524 = 1865^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121749 - 2¹² = 5117653 is a prime.

Together with 5121751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5129749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560874 + 2560875.

It is an arithmetic number, because the mean of its divisors is an integer number (2560875).

Almost surely, 2^5121749 is an apocalyptic number.

It is an amenable number.

5121749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121749 is an equidigital number, since it uses as much as digits as its factorization.

5121749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 5121749 is about 2263.1281448473. The cubic root of 5121749 is about 172.3743985218.

The spelling of 5121749 in words is "five million, one hundred twenty-one thousand, seven hundred forty-nine".