91641454 has 4 divisors (see below), whose sum is σ = 137462184. Its totient is φ = 45820726.

The previous prime is 91641439. The next prime is 91641481. The reversal of 91641454 is 45414619.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45414619 = 223 ⋅203653.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22910362 + ... + 22910365.

It is an arithmetic number, because the mean of its divisors is an integer number (34365546).

Almost surely, 2^91641454 is an apocalyptic number.

91641454 is a deficient number, since it is larger than the sum of its proper divisors (45820730).

91641454 is a wasteful number, since it uses less digits than its factorization.

91641454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45820729.

The product of its digits is 17280, while the sum is 34.

The square root of 91641454 is about 9572.9542984389. The cubic root of 91641454 is about 450.8485290321.

The spelling of 91641454 in words is "ninety-one million, six hundred forty-one thousand, four hundred fifty-four".