55147617 has 24 divisors (see below), whose sum is σ = 92327040. Its totient is φ = 31066560.

The previous prime is 55147601. The next prime is 55147637. The reversal of 55147617 is 71674155.

55147617 is a `hidden beast` number, since 551 + 47 + 61 + 7 = 666.

55147617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55147617 - 2⁴ = 55147601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147637) 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 23 ways as a sum of consecutive naturals, for example, 1692 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (3846960).

Almost surely, 2^55147617 is an apocalyptic number.

It is an amenable number.

55147617 is a deficient number, since it is larger than the sum of its proper divisors (37179423).

55147617 is a wasteful number, since it uses less digits than its factorization.

55147617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12413 (or 12410 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 55147617 is about 7426.1441542701. The cubic root of 55147617 is about 380.6351727081.

It can be divided in two parts, 5514 and 7617, that added together give a palindrome (13131).

The spelling of 55147617 in words is "fifty-five million, one hundred forty-seven thousand, six hundred seventeen".