55306071 has 12 divisors (see below), whose sum is σ = 82845672. Its totient is φ = 36870552.

The previous prime is 55306067. The next prime is 55306073. The reversal of 55306071 is 17060355.

55306071 is a `hidden beast` number, since 5 + 53 + 0 + 607 + 1 = 666.

It is not a de Polignac number, because 55306071 - 2² = 55306067 is a prime.

It is a super-2 number, since 2×55306071² = 6117522978914082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55306073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113556 + ... + 114041.

It is an arithmetic number, because the mean of its divisors is an integer number (6903806).

Almost surely, 2^55306071 is an apocalyptic number.

55306071 is a deficient number, since it is larger than the sum of its proper divisors (27539601).

55306071 is an equidigital number, since it uses as much as digits as its factorization.

55306071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227612 (or 227600 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 55306071 is about 7436.8051608201. The cubic root of 55306071 is about 380.9993799978. Note that the first 3 decimals are identical.

The spelling of 55306071 in words is "fifty-five million, three hundred six thousand, seventy-one".