56487778 has 8 divisors (see below), whose sum is σ = 84768768. Its totient is φ = 28231524.

The previous prime is 56487757. The next prime is 56487799. The reversal of 56487778 is 87778465.

It is an interprime number because it is at equal distance from previous prime (56487757) and next prime (56487799).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 1375 + ... + 10717.

It is an arithmetic number, because the mean of its divisors is an integer number (10596096).

Almost surely, 2^56487778 is an apocalyptic number.

56487778 is a deficient number, since it is larger than the sum of its proper divisors (28280990).

56487778 is a wasteful number, since it uses less digits than its factorization.

56487778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12368.

The product of its digits is 2634240, while the sum is 52.

The square root of 56487778 is about 7515.8351498686. The cubic root of 56487778 is about 383.6938432470.

The spelling of 56487778 in words is "fifty-six million, four hundred eighty-seven thousand, seven hundred seventy-eight".