55759219 has 4 divisors (see below), whose sum is σ = 55816144. Its totient is φ = 55702296.

The previous prime is 55759181. The next prime is 55759229. The reversal of 55759219 is 91295755.

It is a happy number.

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 55759219 - 2²¹ = 53662067 is a prime.

It is a super-2 number, since 2×55759219² = 6218181006979922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55759229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26967 + ... + 28960.

It is an arithmetic number, because the mean of its divisors is an integer number (13954036).

Almost surely, 2^55759219 is an apocalyptic number.

55759219 is a deficient number, since it is larger than the sum of its proper divisors (56925).

55759219 is an equidigital number, since it uses as much as digits as its factorization.

55759219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56924.

The product of its digits is 141750, while the sum is 43.

The square root of 55759219 is about 7467.2095859163. The cubic root of 55759219 is about 382.0371184567.

It can be divided in two parts, 55759 and 219, that multiplied together give a palindrome (12211221).

The spelling of 55759219 in words is "fifty-five million, seven hundred fifty-nine thousand, two hundred nineteen".