55867081 has 4 divisors (see below), whose sum is σ = 55940500. Its totient is φ = 55793664.

The previous prime is 55867027. The next prime is 55867099. The reversal of 55867081 is 18076855.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18412681 + 37454400 = 4291^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 55867081 - 2⁷ = 55866953 is a prime.

It is a super-2 number, since 2×55867081² = 6242261478921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55867001) 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, 35556 + ... + 37093.

It is an arithmetic number, because the mean of its divisors is an integer number (13985125).

Almost surely, 2^55867081 is an apocalyptic number.

It is an amenable number.

55867081 is a deficient number, since it is larger than the sum of its proper divisors (73419).

55867081 is an equidigital number, since it uses as much as digits as its factorization.

55867081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73418.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 55867081 is about 7474.4284731343. The cubic root of 55867081 is about 382.2833004402.

The spelling of 55867081 in words is "fifty-five million, eight hundred sixty-seven thousand, eighty-one".