91224601 has 32 divisors (see below), whose sum is σ = 110170368. Its totient is φ = 74680320.

The previous prime is 91224589. The next prime is 91224613. The reversal of 91224601 is 10642219.

It is an interprime number because it is at equal distance from previous prime (91224589) and next prime (91224613).

It is not a de Polignac number, because 91224601 - 2⁷ = 91224473 is a prime.

It is a super-3 number, since 3×91224601³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91224641) 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 31 ways as a sum of consecutive naturals, for example, 665805 + ... + 665941.

It is an arithmetic number, because the mean of its divisors is an integer number (3442824).

Almost surely, 2^91224601 is an apocalyptic number.

It is an amenable number.

91224601 is a deficient number, since it is larger than the sum of its proper divisors (18945767).

91224601 is a wasteful number, since it uses less digits than its factorization.

91224601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 91224601 is about 9551.1570503264. The cubic root of 91224601 is about 450.1638925655.

The spelling of 91224601 in words is "ninety-one million, two hundred twenty-four thousand, six hundred one".