2257779 has 4 divisors (see below), whose sum is σ = 3010376. Its totient is φ = 1505184.

The previous prime is 2257771. The next prime is 2257781. The reversal of 2257779 is 9777522.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2257779 - 2³ = 2257771 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁹ + 5⁷ + 7 + 7⁷ + 7⁷ + 9² .

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2257771) 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, 376294 + ... + 376299.

It is an arithmetic number, because the mean of its divisors is an integer number (752594).

2^2257779 is an apocalyptic number.

2257779 is a deficient number, since it is larger than the sum of its proper divisors (752597).

2257779 is an equidigital number, since it uses as much as digits as its factorization.

2257779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752596.

The product of its digits is 61740, while the sum is 39.

The square root of 2257779 is about 1502.5907626496. The cubic root of 2257779 is about 131.1879089529.

The spelling of 2257779 in words is "two million, two hundred fifty-seven thousand, seven hundred seventy-nine".