2257120651 has 4 divisors (see below), whose sum is σ = 2389892472. Its totient is φ = 2124348832.

The previous prime is 2257120603. The next prime is 2257120667. The reversal of 2257120651 is 1560217522.

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

It is a de Polignac number, because none of the positive numbers 2^k-2257120651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257120681) 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, 66385885 + ... + 66385918.

It is an arithmetic number, because the mean of its divisors is an integer number (597473118).

Almost surely, 2^2257120651 is an apocalyptic number.

2257120651 is a deficient number, since it is larger than the sum of its proper divisors (132771821).

2257120651 is a wasteful number, since it uses less digits than its factorization.

2257120651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132771820.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 2257120651 is about 47509.1638634064. The cubic root of 2257120651 is about 1311.7515662351.

The spelling of 2257120651 in words is "two billion, two hundred fifty-seven million, one hundred twenty thousand, six hundred fifty-one".