2553442681 has 4 divisors (see below), whose sum is σ = 2664461952. Its totient is φ = 2442423412.

The previous prime is 2553442679. The next prime is 2553442729. The reversal of 2553442681 is 1862443552.

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 2553442681 - 2¹ = 2553442679 is a prime.

It is a super-2 number, since 2×2553442681² = 13040139050304935522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2553442621) 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, 55509601 + ... + 55509646.

It is an arithmetic number, because the mean of its divisors is an integer number (666115488).

Almost surely, 2^2553442681 is an apocalyptic number.

It is an amenable number.

2553442681 is a deficient number, since it is larger than the sum of its proper divisors (111019271).

2553442681 is a wasteful number, since it uses less digits than its factorization.

2553442681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111019270.

The product of its digits is 230400, while the sum is 40.

The square root of 2553442681 is about 50531.6008157272. The cubic root of 2553442681 is about 1366.8117526386.

The spelling of 2553442681 in words is "two billion, five hundred fifty-three million, four hundred forty-two thousand, six hundred eighty-one".