2252356681 has 3 divisors (see below), whose sum is σ = 2252404141. Its totient is φ = 2252309222.

The previous prime is 2252356669. The next prime is 2252356699. The reversal of 2252356681 is 1866532522.

It is a happy number.

The square root of 2252356681 is 47459.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-2252356681 is a prime.

It is a super-2 number, since 2×2252356681² = 10146221236890671522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2252356081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23730 + ... + 71188.

Almost surely, 2^2252356681 is an apocalyptic number.

2252356681 is the 47459-th square number.

2252356681 is the 23730-th centered octagonal number.

It is an amenable number.

2252356681 is a deficient number, since it is larger than the sum of its proper divisors (47460).

2252356681 is an frugal number, since it uses more digits than its factorization.

2252356681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94918 (or 47459 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The cubic root of 2252356681 is about 1310.8280375741.

The spelling of 2252356681 in words is "two billion, two hundred fifty-two million, three hundred fifty-six thousand, six hundred eighty-one".