91601061 has 4 divisors (see below), whose sum is σ = 122134752. Its totient is φ = 61067372.

The previous prime is 91601047. The next prime is 91601113. The reversal of 91601061 is 16010619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91601061 - 2⁶ = 91600997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91601561) 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, 15266841 + ... + 15266846.

It is an arithmetic number, because the mean of its divisors is an integer number (30533688).

Almost surely, 2^91601061 is an apocalyptic number.

It is an amenable number.

91601061 is a deficient number, since it is larger than the sum of its proper divisors (30533691).

91601061 is a wasteful number, since it uses less digits than its factorization.

91601061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30533690.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 91601061 is about 9570.8443201214. The cubic root of 91601061 is about 450.7822788067.

The spelling of 91601061 in words is "ninety-one million, six hundred one thousand, sixty-one".