56775999 has 8 divisors (see below), whose sum is σ = 86515840. Its totient is φ = 32443416.

The previous prime is 56775989. The next prime is 56776043. The reversal of 56775999 is 99957765.

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

It is not a de Polignac number, because 56775999 - 2⁵ = 56775967 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 (56775959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351789 + ... + 1351830.

It is an arithmetic number, because the mean of its divisors is an integer number (10814480).

Almost surely, 2^56775999 is an apocalyptic number.

56775999 is a deficient number, since it is larger than the sum of its proper divisors (29739841).

56775999 is a wasteful number, since it uses less digits than its factorization.

56775999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703629.

The product of its digits is 5358150, while the sum is 57.

The square root of 56775999 is about 7534.9850033029. The cubic root of 56775999 is about 384.3453179010.

The spelling of 56775999 in words is "fifty-six million, seven hundred seventy-five thousand, nine hundred ninety-nine".