55156005 has 16 divisors (see below), whose sum is σ = 98055360. Its totient is φ = 29416464.

The previous prime is 55155979. The next prime is 55156009. The reversal of 55156005 is 50065155.

55156005 is a `hidden beast` number, since 5 + 51 + 5 + 600 + 5 = 666.

55156005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-55156005 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55156005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55156009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204147 + ... + 204416.

It is an arithmetic number, because the mean of its divisors is an integer number (6128460).

Almost surely, 2^55156005 is an apocalyptic number.

It is an amenable number.

55156005 is a deficient number, since it is larger than the sum of its proper divisors (42899355).

55156005 is a wasteful number, since it uses less digits than its factorization.

55156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408577 (or 408571 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 55156005 is about 7426.7088942546. The cubic root of 55156005 is about 380.6544700422.

The spelling of 55156005 in words is "fifty-five million, one hundred fifty-six thousand, five".