2521117 has 4 divisors (see below), whose sum is σ = 2669436. Its totient is φ = 2372800.

The previous prime is 2521111. The next prime is 2521147. The reversal of 2521117 is 7111252.

2521117 is digitally balanced in base 2, 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 1207801 + 1313316 = 1099^2 + 1146^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521117 - 2¹⁹ = 1996829 is a prime.

It is a Duffinian number.

2521117 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2521094 and 2521103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74134 + ... + 74167.

It is an arithmetic number, because the mean of its divisors is an integer number (667359).

2^2521117 is an apocalyptic number.

It is an amenable number.

2521117 is a deficient number, since it is larger than the sum of its proper divisors (148319).

2521117 is a wasteful number, since it uses less digits than its factorization.

2521117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148318.

The product of its digits is 140, while the sum is 19.

The square root of 2521117 is about 1587.8025695911. The cubic root of 2521117 is about 136.1019456213.

Adding to 2521117 its reverse (7111252), we get a palindrome (9632369).

It can be divided in two parts, 252 and 1117, that added together give a square (1369 = 37²).

The spelling of 2521117 in words is "two million, five hundred twenty-one thousand, one hundred seventeen".