2548729 has 4 divisors (see below), whose sum is σ = 2565760. Its totient is φ = 2531700.

The previous prime is 2548703. The next prime is 2548751. The reversal of 2548729 is 9278452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2548729 - 2⁵ = 2548697 is a prime.

It is a Duffinian number.

2548729 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2548769) 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, 8289 + ... + 8590.

It is an arithmetic number, because the mean of its divisors is an integer number (641440).

2^2548729 is an apocalyptic number.

It is an amenable number.

2548729 is a deficient number, since it is larger than the sum of its proper divisors (17031).

2548729 is a wasteful number, since it uses less digits than its factorization.

2548729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17030.

The product of its digits is 40320, while the sum is 37.

The square root of 2548729 is about 1596.4739271282. The cubic root of 2548729 is about 136.5970185141.

The spelling of 2548729 in words is "two million, five hundred forty-eight thousand, seven hundred twenty-nine".