2521385 has 8 divisors (see below), whose sum is σ = 3123456. Its totient is φ = 1951920.

The previous prime is 2521373. The next prime is 2521397. The reversal of 2521385 is 5831252.

2521385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2521373) and next prime (2521397).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521385 - 2¹² = 2517289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7979 + ... + 8288.

It is an arithmetic number, because the mean of its divisors is an integer number (390432).

2^2521385 is an apocalyptic number.

It is an amenable number.

2521385 is a deficient number, since it is larger than the sum of its proper divisors (602071).

2521385 is a wasteful number, since it uses less digits than its factorization.

2521385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16303.

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

The square root of 2521385 is about 1587.8869607123. The cubic root of 2521385 is about 136.1067680907.

The spelling of 2521385 in words is "two million, five hundred twenty-one thousand, three hundred eighty-five".