55789679 has 4 divisors (see below), whose sum is σ = 60861480. Its totient is φ = 50717880.

The previous prime is 55789661. The next prime is 55789691. The reversal of 55789679 is 97698755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55789679 is a prime.

It is a super-2 number, since 2×55789679² = 6224976565846082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55789379) 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, 2535884 + ... + 2535905.

It is an arithmetic number, because the mean of its divisors is an integer number (15215370).

Almost surely, 2^55789679 is an apocalyptic number.

55789679 is a deficient number, since it is larger than the sum of its proper divisors (5071801).

55789679 is a wasteful number, since it uses less digits than its factorization.

55789679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071800.

The product of its digits is 4762800, while the sum is 56.

The square root of 55789679 is about 7469.2488912875. The cubic root of 55789679 is about 382.1066718716.

The spelling of 55789679 in words is "fifty-five million, seven hundred eighty-nine thousand, six hundred seventy-nine".