55673999 has 8 divisors (see below), whose sum is σ = 56235600. Its totient is φ = 55115200.

The previous prime is 55673987. The next prime is 55674001. The reversal of 55673999 is 99937655.

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

It is a cyclic number.

It is not a de Polignac number, because 55673999 - 2¹² = 55669903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55673999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55673909) 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, 72779 + ... + 73539.

It is an arithmetic number, because the mean of its divisors is an integer number (7029450).

Almost surely, 2^55673999 is an apocalyptic number.

55673999 is a deficient number, since it is larger than the sum of its proper divisors (561601).

55673999 is a wasteful number, since it uses less digits than its factorization.

55673999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401.

The product of its digits is 2296350, while the sum is 53.

The square root of 55673999 is about 7461.5011224284. The cubic root of 55673999 is about 381.8423894997.

The spelling of 55673999 in words is "fifty-five million, six hundred seventy-three thousand, nine hundred ninety-nine".