55446999 has 4 divisors (see below), whose sum is σ = 73929336. Its totient is φ = 36964664.

The previous prime is 55446991. The next prime is 55447001. The reversal of 55446999 is 99964455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55446999 - 2³ = 55446991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55446991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9241164 + ... + 9241169.

It is an arithmetic number, because the mean of its divisors is an integer number (18482334).

Almost surely, 2^55446999 is an apocalyptic number.

55446999 is a deficient number, since it is larger than the sum of its proper divisors (18482337).

55446999 is a wasteful number, since it uses less digits than its factorization.

55446999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18482336.

The product of its digits is 1749600, while the sum is 51.

The square root of 55446999 is about 7446.2741690056. The cubic root of 55446999 is about 381.3227196590.

The spelling of 55446999 in words is "fifty-five million, four hundred forty-six thousand, nine hundred ninety-nine".