191133053 has 4 divisors (see below), whose sum is σ = 193751388. Its totient is φ = 188514720.

The previous prime is 191133049. The next prime is 191133121. The reversal of 191133053 is 350331191.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100540729 + 90592324 = 10027^2 + 9518^2 .

It is a cyclic number.

It is not a de Polignac number, because 191133053 - 2² = 191133049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191133253) by changing a digit.

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, 1309058 + ... + 1309203.

It is an arithmetic number, because the mean of its divisors is an integer number (48437847).

Almost surely, 2^191133053 is an apocalyptic number.

It is an amenable number.

191133053 is a deficient number, since it is larger than the sum of its proper divisors (2618335).

191133053 is an equidigital number, since it uses as much as digits as its factorization.

191133053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618334.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 191133053 is about 13825.0878116560. The cubic root of 191133053 is about 576.0302165942.

The spelling of 191133053 in words is "one hundred ninety-one million, one hundred thirty-three thousand, fifty-three".