19955153 has 4 divisors (see below), whose sum is σ = 19967088. Its totient is φ = 19943220.

The previous prime is 19955147. The next prime is 19955167. The reversal of 19955153 is 35155991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 19955153 - 2⁴ = 19955137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19955183) 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 in 3 ways as a sum of consecutive naturals, for example, 2951 + ... + 6972.

It is an arithmetic number, because the mean of its divisors is an integer number (4991772).

Almost surely, 2^19955153 is an apocalyptic number.

It is an amenable number.

19955153 is a deficient number, since it is larger than the sum of its proper divisors (11935).

19955153 is an equidigital number, since it uses as much as digits as its factorization.

19955153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934.

The product of its digits is 30375, while the sum is 38.

The square root of 19955153 is about 4467.1190940023. The cubic root of 19955153 is about 271.2387206760.

The spelling of 19955153 in words is "nineteen million, nine hundred fifty-five thousand, one hundred fifty-three".