2256217451 has 4 divisors (see below), whose sum is σ = 2271360000. Its totient is φ = 2241074904.

The previous prime is 2256217427. The next prime is 2256217459. The reversal of 2256217451 is 1547126522.

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

It is a cyclic number.

It is not a de Polignac number, because 2256217451 - 2¹⁴ = 2256201067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256217459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7571051 + ... + 7571348.

It is an arithmetic number, because the mean of its divisors is an integer number (567840000).

Almost surely, 2^2256217451 is an apocalyptic number.

2256217451 is a deficient number, since it is larger than the sum of its proper divisors (15142549).

2256217451 is a wasteful number, since it uses less digits than its factorization.

2256217451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142548.

The product of its digits is 33600, while the sum is 35.

The square root of 2256217451 is about 47499.6573777117. The cubic root of 2256217451 is about 1311.5765745437.

The spelling of 2256217451 in words is "two billion, two hundred fifty-six million, two hundred seventeen thousand, four hundred fifty-one".