55611719 has 2 divisors, whose sum is σ = 55611720. Its totient is φ = 55611718.

The previous prime is 55611713. The next prime is 55611757. The reversal of 55611719 is 91711655.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55611719 - 2⁸ = 55611463 is a prime.

It is a super-2 number, since 2×55611719² = 6185326580269922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55611713) 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 as a sum of consecutive naturals, namely, 27805859 + 27805860.

It is an arithmetic number, because the mean of its divisors is an integer number (27805860).

Almost surely, 2^55611719 is an apocalyptic number.

55611719 is a deficient number, since it is larger than the sum of its proper divisors (1).

55611719 is an equidigital number, since it uses as much as digits as its factorization.

55611719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 35.

The square root of 55611719 is about 7457.3265316734. The cubic root of 55611719 is about 381.6999530686.

The spelling of 55611719 in words is "fifty-five million, six hundred eleven thousand, seven hundred nineteen".