55672517 has 4 divisors (see below), whose sum is σ = 55688556. Its totient is φ = 55656480.

The previous prime is 55672483. The next prime is 55672537. The reversal of 55672517 is 71527655.

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 20079361 + 35593156 = 4481^2 + 5966^2 .

It is a cyclic number.

It is not a de Polignac number, because 55672517 - 2⁶ = 55672453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55672537) 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, 398 + ... + 10559.

It is an arithmetic number, because the mean of its divisors is an integer number (13922139).

Almost surely, 2^55672517 is an apocalyptic number.

It is an amenable number.

55672517 is a deficient number, since it is larger than the sum of its proper divisors (16039).

55672517 is a wasteful number, since it uses less digits than its factorization.

55672517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16038.

The product of its digits is 73500, while the sum is 38.

The square root of 55672517 is about 7461.4018119922. The cubic root of 55672517 is about 381.8390013505.

The spelling of 55672517 in words is "fifty-five million, six hundred seventy-two thousand, five hundred seventeen".