55521424311 has 4 divisors (see below), whose sum is σ = 74028565752. Its totient is φ = 37014282872.

The previous prime is 55521424243. The next prime is 55521424339. The reversal of 55521424311 is 11342412555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55521424311 - 2¹⁹ = 55520900023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55521424391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9253570716 + ... + 9253570721.

It is an arithmetic number, because the mean of its divisors is an integer number (18507141438).

Almost surely, 2^55521424311 is an apocalyptic number.

55521424311 is a deficient number, since it is larger than the sum of its proper divisors (18507141441).

55521424311 is a wasteful number, since it uses less digits than its factorization.

55521424311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18507141440.

The product of its digits is 24000, while the sum is 33.

Adding to 55521424311 its reverse (11342412555), we get a palindrome (66863836866).

The spelling of 55521424311 in words is "fifty-five billion, five hundred twenty-one million, four hundred twenty-four thousand, three hundred eleven".