2521351 has 4 divisors (see below), whose sum is σ = 2881552. Its totient is φ = 2161152.

The previous prime is 2521339. The next prime is 2521361. The reversal of 2521351 is 1531252.

2521351 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 not a de Polignac number, because 2521351 - 2⁷ = 2521223 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 (2521361) 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, 180090 + ... + 180103.

It is an arithmetic number, because the mean of its divisors is an integer number (720388).

2^2521351 is an apocalyptic number.

2521351 is a deficient number, since it is larger than the sum of its proper divisors (360201).

2521351 is an equidigital number, since it uses as much as digits as its factorization.

2521351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360200.

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

The square root of 2521351 is about 1587.8762546244. The cubic root of 2521351 is about 136.1061563038.

Subtracting from 2521351 its reverse (1531252), we obtain a palindrome (990099).

The spelling of 2521351 in words is "two million, five hundred twenty-one thousand, three hundred fifty-one".