2252681661 has 8 divisors (see below), whose sum is σ = 3004479520. Its totient is φ = 1501335792.

The previous prime is 2252681657. The next prime is 2252681671. The reversal of 2252681661 is 1661862522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2252681661 - 2² = 2252681657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252681671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101191 + ... + 121428.

It is an arithmetic number, because the mean of its divisors is an integer number (375559940).

Almost surely, 2^2252681661 is an apocalyptic number.

It is an amenable number.

2252681661 is a deficient number, since it is larger than the sum of its proper divisors (751797859).

2252681661 is a wasteful number, since it uses less digits than its factorization.

2252681661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225995.

The product of its digits is 69120, while the sum is 39.

The square root of 2252681661 is about 47462.4236738917. The cubic root of 2252681661 is about 1310.8910785677.

The spelling of 2252681661 in words is "two billion, two hundred fifty-two million, six hundred eighty-one thousand, six hundred sixty-one".