91237361 has 4 divisors (see below), whose sum is σ = 91334052. Its totient is φ = 91140672.

The previous prime is 91237339. The next prime is 91237369. The reversal of 91237361 is 16373219.

It is a happy number.

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 71301136 + 19936225 = 8444^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 91237361 - 2¹⁰ = 91236337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91237369) 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, 46916 + ... + 48821.

It is an arithmetic number, because the mean of its divisors is an integer number (22833513).

Almost surely, 2^91237361 is an apocalyptic number.

It is an amenable number.

91237361 is a deficient number, since it is larger than the sum of its proper divisors (96691).

91237361 is an equidigital number, since it uses as much as digits as its factorization.

91237361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96690.

The product of its digits is 6804, while the sum is 32.

The square root of 91237361 is about 9551.8250088661. The cubic root of 91237361 is about 450.1848804109.

The spelling of 91237361 in words is "ninety-one million, two hundred thirty-seven thousand, three hundred sixty-one".