16553330 has 16 divisors (see below), whose sum is σ = 31091904. Its totient is φ = 6333360.

The previous prime is 16553309. The next prime is 16553333. The reversal of 16553330 is 3335561.

It is a self number, because there is not a number n which added to its sum of digits gives 16553330.

It is not an unprimeable number, because it can be changed into a prime (16553333) 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, 35756 + ... + 36215.

It is an arithmetic number, because the mean of its divisors is an integer number (1943244).

Almost surely, 2^16553330 is an apocalyptic number.

16553330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16553330 is a deficient number, since it is larger than the sum of its proper divisors (14538574).

16553330 is a wasteful number, since it uses less digits than its factorization.

16553330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72001.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 16553330 is about 4068.5783757966. The cubic root of 16553330 is about 254.8561536525.

Adding to 16553330 its reverse (3335561), we get a palindrome (19888891).

The spelling of 16553330 in words is "sixteen million, five hundred fifty-three thousand, three hundred thirty".