91199053 has 8 divisors (see below), whose sum is σ = 99963936. Its totient is φ = 82513200.

The previous prime is 91199051. The next prime is 91199063. The reversal of 91199053 is 35099119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91199053 - 2¹ = 91199051 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 (91199051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17326 + ... + 21967.

It is an arithmetic number, because the mean of its divisors is an integer number (12495492).

Almost surely, 2^91199053 is an apocalyptic number.

It is an amenable number.

91199053 is a deficient number, since it is larger than the sum of its proper divisors (8764883).

91199053 is a wasteful number, since it uses less digits than its factorization.

91199053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39515.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 91199053 is about 9549.8195270906. The cubic root of 91199053 is about 450.1218649370.

The spelling of 91199053 in words is "ninety-one million, one hundred ninety-nine thousand, fifty-three".