2551385 has 8 divisors (see below), whose sum is σ = 3105216. Its totient is φ = 2012080.

The previous prime is 2551369. The next prime is 2551397. The reversal of 2551385 is 5831552.

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

It is not a de Polignac number, because 2551385 - 2⁴ = 2551369 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3239 + ... + 3948.

It is an arithmetic number, because the mean of its divisors is an integer number (388152).

2^2551385 is an apocalyptic number.

It is an amenable number.

2551385 is a deficient number, since it is larger than the sum of its proper divisors (553831).

2551385 is an equidigital number, since it uses as much as digits as its factorization.

2551385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7263.

The product of its digits is 6000, while the sum is 29.

The square root of 2551385 is about 1597.3055437204. The cubic root of 2551385 is about 136.6444507481.

The spelling of 2551385 in words is "two million, five hundred fifty-one thousand, three hundred eighty-five".