55521776001 has 16 divisors (see below), whose sum is σ = 75618756864. Its totient is φ = 36219961344.

The previous prime is 55521775997. The next prime is 55521776027. The reversal of 55521776001 is 10067712555.

It is not a de Polignac number, because 55521776001 - 2² = 55521775997 is a prime.

It is a super-2 number, since 2×55521776001² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55521776081) 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 15 ways as a sum of consecutive naturals, for example, 750465 + ... + 821121.

It is an arithmetic number, because the mean of its divisors is an integer number (4726172304).

Almost surely, 2^55521776001 is an apocalyptic number.

It is an amenable number.

55521776001 is a deficient number, since it is larger than the sum of its proper divisors (20096980863).

55521776001 is a wasteful number, since it uses less digits than its factorization.

55521776001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76280.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 55521776001 in words is "fifty-five billion, five hundred twenty-one million, seven hundred seventy-six thousand, one".