54787879 has 4 divisors (see below), whose sum is σ = 54852520. Its totient is φ = 54723240.

The previous prime is 54787877. The next prime is 54787883. The reversal of 54787879 is 97878745.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97878745 = 5 ⋅19575749.

It is a cyclic number.

It is not a de Polignac number, because 54787879 - 2¹ = 54787877 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 (54787871) 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, 31032 + ... + 32749.

It is an arithmetic number, because the mean of its divisors is an integer number (13713130).

Almost surely, 2^54787879 is an apocalyptic number.

54787879 is a deficient number, since it is larger than the sum of its proper divisors (64641).

54787879 is an equidigital number, since it uses as much as digits as its factorization.

54787879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64640.

The product of its digits is 3951360, while the sum is 55.

The square root of 54787879 is about 7401.8834765214. The cubic root of 54787879 is about 379.8057155503.

The spelling of 54787879 in words is "fifty-four million, seven hundred eighty-seven thousand, eight hundred seventy-nine".