5121729 has 6 divisors (see below), whose sum is σ = 7398066. Its totient is φ = 3414480.

The previous prime is 5121713. The next prime is 5121737. The reversal of 5121729 is 9271215.

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 898704 = 2055^2 + 948^2 .

It is not a de Polignac number, because 5121729 - 2⁴ = 5121713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5121749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284532 + ... + 284549.

It is an arithmetic number, because the mean of its divisors is an integer number (1233011).

Almost surely, 2^5121729 is an apocalyptic number.

It is an amenable number.

5121729 is a deficient number, since it is larger than the sum of its proper divisors (2276337).

5121729 is a wasteful number, since it uses less digits than its factorization.

5121729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569087 (or 569084 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 5121729 is about 2263.1237261803. The cubic root of 5121729 is about 172.3741741523.

The spelling of 5121729 in words is "five million, one hundred twenty-one thousand, seven hundred twenty-nine".