91611141 has 16 divisors (see below), whose sum is σ = 129858240. Its totient is φ = 57283200.

The previous prime is 91611137. The next prime is 91611151. The reversal of 91611141 is 14111619.

It is not a de Polignac number, because 91611141 - 2² = 91611137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91611151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2200 + ... + 13713.

It is an arithmetic number, because the mean of its divisors is an integer number (8116140).

Almost surely, 2^91611141 is an apocalyptic number.

It is an amenable number.

91611141 is a deficient number, since it is larger than the sum of its proper divisors (38247099).

91611141 is a wasteful number, since it uses less digits than its factorization.

91611141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16036.

The product of its digits is 216, while the sum is 24.

The square root of 91611141 is about 9571.3709049436. The cubic root of 91611141 is about 450.7988132539.

The spelling of 91611141 in words is "ninety-one million, six hundred eleven thousand, one hundred forty-one".