55066161 has 16 divisors (see below), whose sum is σ = 78444800. Its totient is φ = 34257168.

The previous prime is 55066139. The next prime is 55066171. The reversal of 55066161 is 16166055.

It is not a de Polignac number, because 55066161 - 2⁵ = 55066129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55066171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3391 + ... + 11028.

It is an arithmetic number, because the mean of its divisors is an integer number (4902800).

Almost surely, 2^55066161 is an apocalyptic number.

It is an amenable number.

55066161 is a deficient number, since it is larger than the sum of its proper divisors (23378639).

55066161 is a wasteful number, since it uses less digits than its factorization.

55066161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55066161 is about 7420.6577201755. The cubic root of 55066161 is about 380.4476741469.

The spelling of 55066161 in words is "fifty-five million, sixty-six thousand, one hundred sixty-one".