2551117 has 4 divisors (see below), whose sum is σ = 2562300. Its totient is φ = 2539936.

The previous prime is 2551103. The next prime is 2551123. The reversal of 2551117 is 7111552.

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 298116 + 2253001 = 546^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551117 - 2¹¹ = 2549069 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 (2551127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5242 + ... + 5707.

It is an arithmetic number, because the mean of its divisors is an integer number (640575).

2^2551117 is an apocalyptic number.

It is an amenable number.

2551117 is a deficient number, since it is larger than the sum of its proper divisors (11183).

2551117 is a wasteful number, since it uses less digits than its factorization.

2551117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11182.

The product of its digits is 350, while the sum is 22.

The square root of 2551117 is about 1597.2216502414. The cubic root of 2551117 is about 136.6396661578.

Adding to 2551117 its reverse (7111552), we get a palindrome (9662669).

The spelling of 2551117 in words is "two million, five hundred fifty-one thousand, one hundred seventeen".