2513251 has 4 divisors (see below), whose sum is σ = 2706592. Its totient is φ = 2319912.

The previous prime is 2513249. The next prime is 2513281. The reversal of 2513251 is 1523152.

2513251 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 is a cyclic number.

It is not a de Polignac number, because 2513251 - 2¹ = 2513249 is a prime.

It is a Duffinian number.

2513251 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513281) 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, 96651 + ... + 96676.

It is an arithmetic number, because the mean of its divisors is an integer number (676648).

2^2513251 is an apocalyptic number.

2513251 is a deficient number, since it is larger than the sum of its proper divisors (193341).

2513251 is a wasteful number, since it uses less digits than its factorization.

2513251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193340.

The product of its digits is 300, while the sum is 19.

The square root of 2513251 is about 1585.3236262669. The cubic root of 2513251 is about 135.9602500613.

Subtracting from 2513251 its reverse (1523152), we obtain a palindrome (990099).

The spelling of 2513251 in words is "two million, five hundred thirteen thousand, two hundred fifty-one".