2256813357 has 4 divisors (see below), whose sum is σ = 3009084480. Its totient is φ = 1504542236.

The previous prime is 2256813353. The next prime is 2256813371. The reversal of 2256813357 is 7533186522.

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 a cyclic number.

It is not a de Polignac number, because 2256813357 - 2² = 2256813353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256813353) 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, 376135557 + ... + 376135562.

It is an arithmetic number, because the mean of its divisors is an integer number (752271120).

Almost surely, 2^2256813357 is an apocalyptic number.

It is an amenable number.

2256813357 is a deficient number, since it is larger than the sum of its proper divisors (752271123).

2256813357 is an equidigital number, since it uses as much as digits as its factorization.

2256813357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752271122.

The product of its digits is 302400, while the sum is 42.

The square root of 2256813357 is about 47505.9297035644. The cubic root of 2256813357 is about 1311.6920343886.

Adding to 2256813357 its reverse (7533186522), we get a palindrome (9789999879).

The spelling of 2256813357 in words is "two billion, two hundred fifty-six million, eight hundred thirteen thousand, three hundred fifty-seven".