91325641 has 8 divisors (see below), whose sum is σ = 100346400. Its totient is φ = 82424640.

The previous prime is 91325639. The next prime is 91325711. The reversal of 91325641 is 14652319.

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

It is a cyclic number.

It is not a de Polignac number, because 91325641 - 2¹ = 91325639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91320641) 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, 28336 + ... + 31393.

It is an arithmetic number, because the mean of its divisors is an integer number (12543300).

Almost surely, 2^91325641 is an apocalyptic number.

It is an amenable number.

91325641 is a deficient number, since it is larger than the sum of its proper divisors (9020759).

91325641 is a wasteful number, since it uses less digits than its factorization.

91325641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59879.

The product of its digits is 6480, while the sum is 31.

The square root of 91325641 is about 9556.4449980105. Note that the first 3 decimals coincide. The cubic root of 91325641 is about 450.3300311462.

The spelling of 91325641 in words is "ninety-one million, three hundred twenty-five thousand, six hundred forty-one".