2257106209 has 4 divisors (see below), whose sum is σ = 2258436400. Its totient is φ = 2255776020.

The previous prime is 2257106207. The next prime is 2257106213. The reversal of 2257106209 is 9026017522.

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 a cyclic number.

It is not a de Polignac number, because 2257106209 - 2¹ = 2257106207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257106207) 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, 662547 + ... + 665944.

It is an arithmetic number, because the mean of its divisors is an integer number (564609100).

Almost surely, 2^2257106209 is an apocalyptic number.

It is an amenable number.

2257106209 is a deficient number, since it is larger than the sum of its proper divisors (1330191).

2257106209 is a wasteful number, since it uses less digits than its factorization.

2257106209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330190.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2257106209 is about 47509.0118714334. The cubic root of 2257106209 is about 1311.7487685178.

The spelling of 2257106209 in words is "two billion, two hundred fifty-seven million, one hundred six thousand, two hundred nine".