55116001 has 4 divisors (see below), whose sum is σ = 56019604. Its totient is φ = 54212400.

The previous prime is 55115999. The next prime is 55116043. The reversal of 55116001 is 10061155.

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 1752976 + 53363025 = 1324^2 + 7305^2 .

It is a cyclic number.

It is not a de Polignac number, because 55116001 - 2¹ = 55115999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55116001.

It is not an unprimeable number, because it can be changed into a prime (55116071) 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, 451710 + ... + 451831.

It is an arithmetic number, because the mean of its divisors is an integer number (14004901).

Almost surely, 2^55116001 is an apocalyptic number.

It is an amenable number.

55116001 is a deficient number, since it is larger than the sum of its proper divisors (903603).

55116001 is an equidigital number, since it uses as much as digits as its factorization.

55116001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903602.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 55116001 is about 7424.0151535406. The cubic root of 55116001 is about 380.5624197182.

Adding to 55116001 its reverse (10061155), we get a palindrome (65177156).

The spelling of 55116001 in words is "fifty-five million, one hundred sixteen thousand, one".