55719559 has 4 divisors (see below), whose sum is σ = 63679504. Its totient is φ = 47759616.

The previous prime is 55719551. The next prime is 55719611. The reversal of 55719559 is 95591755.

55719559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55719559 - 2³ = 55719551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55719551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979962 + ... + 3979975.

It is an arithmetic number, because the mean of its divisors is an integer number (15919876).

Almost surely, 2^55719559 is an apocalyptic number.

55719559 is a deficient number, since it is larger than the sum of its proper divisors (7959945).

55719559 is an equidigital number, since it uses as much as digits as its factorization.

55719559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7959944.

The product of its digits is 354375, while the sum is 46.

The square root of 55719559 is about 7464.5535030570. The cubic root of 55719559 is about 381.9465194722.

The spelling of 55719559 in words is "fifty-five million, seven hundred nineteen thousand, five hundred fifty-nine".