55677999 has 32 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 31328640.

The previous prime is 55677997. The next prime is 55678001. The reversal of 55677999 is 99977655.

55677999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55677997) and next prime (55678001).

It is not a de Polignac number, because 55677999 - 2¹ = 55677997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55677997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20194 + ... + 22784.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^55677999 is an apocalyptic number.

55677999 is a deficient number, since it is larger than the sum of its proper divisors (31413201).

55677999 is a wasteful number, since it uses less digits than its factorization.

55677999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655.

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

The square root of 55677999 is about 7461.7691601925. The cubic root of 55677999 is about 381.8515340016.

The spelling of 55677999 in words is "fifty-five million, six hundred seventy-seven thousand, nine hundred ninety-nine".