55355049521 has 4 divisors (see below), whose sum is σ = 58268473200. Its totient is φ = 52441625844.

The previous prime is 55355049499. The next prime is 55355049527. The reversal of 55355049521 is 12594055355.

It is a happy number.

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 55355049521 - 2¹⁴ = 55355033137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55355049527) 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, 1456711811 + ... + 1456711848.

It is an arithmetic number, because the mean of its divisors is an integer number (14567118300).

Almost surely, 2^55355049521 is an apocalyptic number.

It is an amenable number.

55355049521 is a deficient number, since it is larger than the sum of its proper divisors (2913423679).

55355049521 is a wasteful number, since it uses less digits than its factorization.

55355049521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913423678.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 55355049521 in words is "fifty-five billion, three hundred fifty-five million, forty-nine thousand, five hundred twenty-one".