2651257 has 8 divisors (see below), whose sum is σ = 3075776. Its totient is φ = 2238192.

The previous prime is 2651239. The next prime is 2651273. The reversal of 2651257 is 7521562.

2651257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2651257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2651237) 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 7 ways as a sum of consecutive naturals, for example, 2358 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (384472).

2^2651257 is an apocalyptic number.

It is an amenable number.

2651257 is a deficient number, since it is larger than the sum of its proper divisors (424519).

2651257 is an equidigital number, since it uses as much as digits as its factorization.

2651257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727.

The product of its digits is 4200, while the sum is 28.

The square root of 2651257 is about 1628.2680983180. The cubic root of 2651257 is about 138.4046270463.

It can be divided in two parts, 26512 and 57, that added together give a square (26569 = 163²).

The spelling of 2651257 in words is "two million, six hundred fifty-one thousand, two hundred fifty-seven".