2905257 has 4 divisors (see below), whose sum is σ = 3873680. Its totient is φ = 1936836.

The previous prime is 2905241. The next prime is 2905267. The reversal of 2905257 is 7525092.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2905257 - 2⁴ = 2905241 is a prime.

It is a D-number.

It is a Duffinian number.

2905257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2905237) 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, 484207 + ... + 484212.

It is an arithmetic number, because the mean of its divisors is an integer number (968420).

2^2905257 is an apocalyptic number.

It is an amenable number.

2905257 is a deficient number, since it is larger than the sum of its proper divisors (968423).

2905257 is an equidigital number, since it uses as much as digits as its factorization.

2905257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968422.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 2905257 is about 1704.4814460709. The cubic root of 2905257 is about 142.6904317657.

The spelling of 2905257 in words is "two million, nine hundred five thousand, two hundred fifty-seven".