55287679 has 4 divisors (see below), whose sum is σ = 55349280. Its totient is φ = 55226080.

The previous prime is 55287671. The next prime is 55287691. The reversal of 55287679 is 97678255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97678255 = 5 ⋅19535651.

It is a cyclic number.

It is not a de Polignac number, because 55287679 - 2³ = 55287671 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 (55287671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29434 + ... + 31255.

It is an arithmetic number, because the mean of its divisors is an integer number (13837320).

Almost surely, 2^55287679 is an apocalyptic number.

55287679 is a deficient number, since it is larger than the sum of its proper divisors (61601).

55287679 is an equidigital number, since it uses as much as digits as its factorization.

55287679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61600.

The product of its digits is 1058400, while the sum is 49.

The square root of 55287679 is about 7435.5685055011. The cubic root of 55287679 is about 380.9571416119.

The spelling of 55287679 in words is "fifty-five million, two hundred eighty-seven thousand, six hundred seventy-nine".