55891679 has 4 divisors (see below), whose sum is σ = 58321776. Its totient is φ = 53461584.

The previous prime is 55891669. The next prime is 55891741. The reversal of 55891679 is 97619855.

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 55891679 - 2¹⁶ = 55826143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55891639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215014 + ... + 1215059.

It is an arithmetic number, because the mean of its divisors is an integer number (14580444).

Almost surely, 2^55891679 is an apocalyptic number.

55891679 is a deficient number, since it is larger than the sum of its proper divisors (2430097).

55891679 is a wasteful number, since it uses less digits than its factorization.

55891679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430096.

The product of its digits is 680400, while the sum is 50.

The square root of 55891679 is about 7476.0737690314. The cubic root of 55891679 is about 382.3393980245.

The spelling of 55891679 in words is "fifty-five million, eight hundred ninety-one thousand, six hundred seventy-nine".