2521251 has 6 divisors (see below), whose sum is σ = 3641820. Its totient is φ = 1680828.

The previous prime is 2521249. The next prime is 2521271. The reversal of 2521251 is 1521252.

2521251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521251 - 2¹ = 2521249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2521271) 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 5 ways as a sum of consecutive naturals, for example, 140061 + ... + 140078.

It is an arithmetic number, because the mean of its divisors is an integer number (606970).

2^2521251 is an apocalyptic number.

2521251 is a deficient number, since it is larger than the sum of its proper divisors (1120569).

2521251 is a wasteful number, since it uses less digits than its factorization.

2521251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280145 (or 280142 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 2521251 is about 1587.8447657123. The cubic root of 2521251 is about 136.1043568987.

Subtracting from 2521251 its reverse (1521252), we obtain a palindrome (999999).

It can be divided in two parts, 2521 and 251, that added together give a palindrome (2772).

The spelling of 2521251 in words is "two million, five hundred twenty-one thousand, two hundred fifty-one".