91363061 has 6 divisors (see below), whose sum is σ = 95508630. Its totient is φ = 87390248.

The previous prime is 91363057. The next prime is 91363073. The reversal of 91363061 is 16036319.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 256036 = 9545^2 + 506^2 .

It is not a de Polignac number, because 91363061 - 2² = 91363057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91363091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85826 + ... + 86883.

It is an arithmetic number, because the mean of its divisors is an integer number (15918105).

Almost surely, 2^91363061 is an apocalyptic number.

It is an amenable number.

91363061 is a deficient number, since it is larger than the sum of its proper divisors (4145569).

91363061 is a wasteful number, since it uses less digits than its factorization.

91363061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172755 (or 172732 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 91363061 is about 9558.4026385165. The cubic root of 91363061 is about 450.3915292042.

The spelling of 91363061 in words is "ninety-one million, three hundred sixty-three thousand, sixty-one".