553399999 has 4 divisors (see below), whose sum is σ = 562779720. Its totient is φ = 544020280.

The previous prime is 553399993. The next prime is 553400021. The reversal of 553399999 is 999993355.

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 553399999 - 2¹³ = 553391807 is a prime.

It is a Duffinian number.

553399999 is a modest number, since divided by 99999 gives 5533 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553399993) 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, 4689772 + ... + 4689889.

It is an arithmetic number, because the mean of its divisors is an integer number (140694930).

Almost surely, 2^553399999 is an apocalyptic number.

553399999 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

553399999 is a deficient number, since it is larger than the sum of its proper divisors (9379721).

553399999 is an equidigital number, since it uses as much as digits as its factorization.

553399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9379720.

The product of its digits is 13286025, while the sum is 61.

The square root of 553399999 is about 23524.4553390721. The cubic root of 553399999 is about 821.0061014628.

The spelling of 553399999 in words is "five hundred fifty-three million, three hundred ninety-nine thousand, nine hundred ninety-nine".