55083681 has 12 divisors (see below), whose sum is σ = 80386852. Its totient is φ = 36343296.

The previous prime is 55083667. The next prime is 55083701. The reversal of 55083681 is 18638055.

It can be written as a sum of positive squares in 2 ways, for example, as 8503056 + 46580625 = 2916^2 + 6825^2 .

It is not a de Polignac number, because 55083681 - 2⁵ = 55083649 is a prime.

It is a super-2 number, since 2×55083681² = 6068423825019522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55083601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30676 + ... + 32421.

Almost surely, 2^55083681 is an apocalyptic number.

It is an amenable number.

55083681 is a deficient number, since it is larger than the sum of its proper divisors (25303171).

55083681 is a wasteful number, since it uses less digits than its factorization.

55083681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63200 (or 63197 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 55083681 is about 7421.8381146452. The cubic root of 55083681 is about 380.4880179585.

The spelling of 55083681 in words is "fifty-five million, eighty-three thousand, six hundred eighty-one".