55245907717 has 32 divisors (see below), whose sum is σ = 76181140224. Its totient is φ = 38663308800.

The previous prime is 55245907697. The next prime is 55245907723. The reversal of 55245907717 is 71770954255.

It is a cyclic number.

It is not a de Polignac number, because 55245907717 - 2³¹ = 53098424069 is a prime.

It is a super-2 number, since 2×55245907717² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55245907727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708784 + ... + 782857.

It is an arithmetic number, because the mean of its divisors is an integer number (2380660632).

Almost surely, 2^55245907717 is an apocalyptic number.

It is an amenable number.

55245907717 is a deficient number, since it is larger than the sum of its proper divisors (20935232507).

55245907717 is a wasteful number, since it uses less digits than its factorization.

55245907717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491709.

The product of its (nonzero) digits is 3087000, while the sum is 52.

The spelling of 55245907717 in words is "fifty-five billion, two hundred forty-five million, nine hundred seven thousand, seven hundred seventeen".