55317585261 has 8 divisors (see below), whose sum is σ = 73792540800. Its totient is φ = 36860509952.

The previous prime is 55317585259. The next prime is 55317585287. The reversal of 55317585261 is 16258571355.

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 55317585261 - 2¹ = 55317585259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55317585261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55317585061) 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, 4462836 + ... + 4475213.

It is an arithmetic number, because the mean of its divisors is an integer number (9224067600).

Almost surely, 2^55317585261 is an apocalyptic number.

It is an amenable number.

55317585261 is a deficient number, since it is larger than the sum of its proper divisors (18474955539).

55317585261 is a wasteful number, since it uses less digits than its factorization.

55317585261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8940115.

The product of its digits is 1260000, while the sum is 48.

The spelling of 55317585261 in words is "fifty-five billion, three hundred seventeen million, five hundred eighty-five thousand, two hundred sixty-one".