55358999 has 8 divisors (see below), whose sum is σ = 59758560. Its totient is φ = 51125536.

The previous prime is 55358983. The next prime is 55359001. The reversal of 55358999 is 99985355.

It is a happy number.

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 55358999 - 2⁴ = 55358983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55358999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55358909) 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, 40832 + ... + 42165.

It is an arithmetic number, because the mean of its divisors is an integer number (7469820).

Almost surely, 2^55358999 is an apocalyptic number.

55358999 is a deficient number, since it is larger than the sum of its proper divisors (4399561).

55358999 is a wasteful number, since it uses less digits than its factorization.

55358999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83049.

The product of its digits is 2187000, while the sum is 53.

The square root of 55358999 is about 7440.3628271745. The cubic root of 55358999 is about 381.1208802564.

The spelling of 55358999 in words is "fifty-five million, three hundred fifty-eight thousand, nine hundred ninety-nine".