191060455 has 4 divisors (see below), whose sum is σ = 229272552. Its totient is φ = 152848360.

The previous prime is 191060411. The next prime is 191060461. The reversal of 191060455 is 554060191.

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

It is not a de Polignac number, because 191060455 - 2¹¹ = 191058407 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19106041 + ... + 19106050.

It is an arithmetic number, because the mean of its divisors is an integer number (57318138).

Almost surely, 2^191060455 is an apocalyptic number.

191060455 is a deficient number, since it is larger than the sum of its proper divisors (38212097).

191060455 is an equidigital number, since it uses as much as digits as its factorization.

191060455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38212096.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 191060455 is about 13822.4619731797. The cubic root of 191060455 is about 575.9572762405.

The spelling of 191060455 in words is "one hundred ninety-one million, sixty thousand, four hundred fifty-five".