55723081 has 8 divisors (see below), whose sum is σ = 56894400. Its totient is φ = 54559440.

The previous prime is 55723069. The next prime is 55723091. The reversal of 55723081 is 18032755.

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

It is a cyclic number.

It is not a de Polignac number, because 55723081 - 2⁵ = 55723049 is a prime.

It is a super-2 number, since 2×55723081² = 6210123512265122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55723051) 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, 14116 + ... + 17626.

It is an arithmetic number, because the mean of its divisors is an integer number (7111800).

Almost surely, 2^55723081 is an apocalyptic number.

It is an amenable number.

55723081 is a deficient number, since it is larger than the sum of its proper divisors (1171319).

55723081 is a wasteful number, since it uses less digits than its factorization.

55723081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 55723081 is about 7464.7894143104. The cubic root of 55723081 is about 381.9545668397.

The spelling of 55723081 in words is "fifty-five million, seven hundred twenty-three thousand, eighty-one".