2251045857 has 16 divisors (see below), whose sum is σ = 3134302848. Its totient is φ = 1434343680.

The previous prime is 2251045817. The next prime is 2251045891. The reversal of 2251045857 is 7585401522.

It is not a de Polignac number, because 2251045857 - 2⁶ = 2251045793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251045817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82857 + ... + 106617.

It is an arithmetic number, because the mean of its divisors is an integer number (195893928).

Almost surely, 2^2251045857 is an apocalyptic number.

It is an amenable number.

2251045857 is a deficient number, since it is larger than the sum of its proper divisors (883256991).

2251045857 is a wasteful number, since it uses less digits than its factorization.

2251045857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25160.

The product of its (nonzero) digits is 112000, while the sum is 39.

The square root of 2251045857 is about 47445.1879224859. The cubic root of 2251045857 is about 1310.5736968199.

The spelling of 2251045857 in words is "two billion, two hundred fifty-one million, forty-five thousand, eight hundred fifty-seven".