55581711 has 16 divisors (see below), whose sum is σ = 75449088. Its totient is φ = 36388800.

The previous prime is 55581709. The next prime is 55581727. The reversal of 55581711 is 11718555.

It is not a de Polignac number, because 55581711 - 2¹ = 55581709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55581781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97056 + ... + 97626.

It is an arithmetic number, because the mean of its divisors is an integer number (4715568).

Almost surely, 2^55581711 is an apocalyptic number.

55581711 is a deficient number, since it is larger than the sum of its proper divisors (19867377).

55581711 is a wasteful number, since it uses less digits than its factorization.

55581711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its digits is 7000, while the sum is 33.

The square root of 55581711 is about 7455.3142790898. The cubic root of 55581711 is about 381.6312858092.

The spelling of 55581711 in words is "fifty-five million, five hundred eighty-one thousand, seven hundred eleven".