55512917 has 8 divisors (see below), whose sum is σ = 56583072. Its totient is φ = 54450000.

The previous prime is 55512911. The next prime is 55512979. The reversal of 55512917 is 71921555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55512917 - 2⁴ = 55512901 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 (55512911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15167 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (7072884).

Almost surely, 2^55512917 is an apocalyptic number.

It is an amenable number.

55512917 is a deficient number, since it is larger than the sum of its proper divisors (1070155).

55512917 is a wasteful number, since it uses less digits than its factorization.

55512917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619.

The product of its digits is 15750, while the sum is 35.

The square root of 55512917 is about 7450.6990947159. The cubic root of 55512917 is about 381.4737712764.

The spelling of 55512917 in words is "fifty-five million, five hundred twelve thousand, nine hundred seventeen".