55147611 has 4 divisors (see below), whose sum is σ = 73530152. Its totient is φ = 36765072.

The previous prime is 55147601. The next prime is 55147637. The reversal of 55147611 is 11674155.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55147611 - 2⁷ = 55147483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55147601) 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, 9191266 + ... + 9191271.

It is an arithmetic number, because the mean of its divisors is an integer number (18382538).

Almost surely, 2^55147611 is an apocalyptic number.

55147611 is a deficient number, since it is larger than the sum of its proper divisors (18382541).

55147611 is a wasteful number, since it uses less digits than its factorization.

55147611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18382540.

The product of its digits is 4200, while the sum is 30.

The square root of 55147611 is about 7426.1437502919. The cubic root of 55147611 is about 380.6351589039.

The spelling of 55147611 in words is "fifty-five million, one hundred forty-seven thousand, six hundred eleven".