19201055 has 4 divisors (see below), whose sum is σ = 23041272. Its totient is φ = 15360840.

The previous prime is 19201037. The next prime is 19201057. The reversal of 19201055 is 55010291.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19201055 - 2¹² = 19196959 is a prime.

It is a super-2 number, since 2×19201055² = 737361026226050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19201055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19201057) 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, 1920101 + ... + 1920110.

It is an arithmetic number, because the mean of its divisors is an integer number (5760318).

Almost surely, 2^19201055 is an apocalyptic number.

19201055 is a deficient number, since it is larger than the sum of its proper divisors (3840217).

19201055 is an equidigital number, since it uses as much as digits as its factorization.

19201055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840216.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 19201055 is about 4381.9008432414. The cubic root of 19201055 is about 267.7780844692.

The spelling of 19201055 in words is "nineteen million, two hundred one thousand, fifty-five".