55511521411 has 2 divisors, whose sum is σ = 55511521412. Its totient is φ = 55511521410.

The previous prime is 55511521391. The next prime is 55511521423. The reversal of 55511521411 is 11412511555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55511521411 - 2⁵ = 55511521379 is a prime.

It is a super-2 number, since 2×55511521411² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55511521711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755760705 + 27755760706.

It is an arithmetic number, because the mean of its divisors is an integer number (27755760706).

Almost surely, 2^55511521411 is an apocalyptic number.

55511521411 is a deficient number, since it is larger than the sum of its proper divisors (1).

55511521411 is an equidigital number, since it uses as much as digits as its factorization.

55511521411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5000, while the sum is 31.

The spelling of 55511521411 in words is "fifty-five billion, five hundred eleven million, five hundred twenty-one thousand, four hundred eleven".