55085902649 has 4 divisors (see below), whose sum is σ = 55423853136. Its totient is φ = 54747952164.

The previous prime is 55085902637. The next prime is 55085902657. The reversal of 55085902649 is 94620958055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55085902649 - 2⁴ = 55085902633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55085902649.

It is not an unprimeable number, because it can be changed into a prime (55085901649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168974999 + ... + 168975324.

It is an arithmetic number, because the mean of its divisors is an integer number (13855963284).

Almost surely, 2^55085902649 is an apocalyptic number.

It is an amenable number.

55085902649 is a deficient number, since it is larger than the sum of its proper divisors (337950487).

55085902649 is a wasteful number, since it uses less digits than its factorization.

55085902649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337950486.

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 55085902649 in words is "fifty-five billion, eighty-five million, nine hundred two thousand, six hundred forty-nine".