16653953 has 2 divisors, whose sum is σ = 16653954. Its totient is φ = 16653952.

The previous prime is 16653929. The next prime is 16653961. The reversal of 16653953 is 35935661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15547249 + 1106704 = 3943^2 + 1052^2 .

It is a cyclic number.

It is not a de Polignac number, because 16653953 - 2⁸ = 16653697 is a prime.

It is not a weakly prime, because it can be changed into another prime (16653653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8326976 + 8326977.

It is an arithmetic number, because the mean of its divisors is an integer number (8326977).

Almost surely, 2^16653953 is an apocalyptic number.

It is an amenable number.

16653953 is a deficient number, since it is larger than the sum of its proper divisors (1).

16653953 is an equidigital number, since it uses as much as digits as its factorization.

16653953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 38.

The square root of 16653953 is about 4080.9255077739. The cubic root of 16653953 is about 255.3715102577.

The spelling of 16653953 in words is "sixteen million, six hundred fifty-three thousand, nine hundred fifty-three".