2521853 has 4 divisors (see below), whose sum is σ = 2528988. Its totient is φ = 2514720.

The previous prime is 2521847. The next prime is 2521901. The reversal of 2521853 is 3581252.

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 1708249 + 813604 = 1307^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521853 - 2¹⁰ = 2520829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (632247).

2^2521853 is an apocalyptic number.

It is an amenable number.

2521853 is a deficient number, since it is larger than the sum of its proper divisors (7135).

2521853 is an equidigital number, since it uses as much as digits as its factorization.

2521853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134.

The product of its digits is 2400, while the sum is 26.

The square root of 2521853 is about 1588.0343195284. The cubic root of 2521853 is about 136.1151885986.

The spelling of 2521853 in words is "two million, five hundred twenty-one thousand, eight hundred fifty-three".