91536061 has 4 divisors (see below), whose sum is σ = 91720000. Its totient is φ = 91352124.

The previous prime is 91536047. The next prime is 91536089. The reversal of 91536061 is 16063519.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16063519 = 47 ⋅341777.

It is a cyclic number.

It is not a de Polignac number, because 91536061 - 2¹¹ = 91534013 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 (91536001) 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 3 ways as a sum of consecutive naturals, for example, 91221 + ... + 92218.

It is an arithmetic number, because the mean of its divisors is an integer number (22930000).

Almost surely, 2^91536061 is an apocalyptic number.

It is an amenable number.

91536061 is a deficient number, since it is larger than the sum of its proper divisors (183939).

91536061 is a wasteful number, since it uses less digits than its factorization.

91536061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183938.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 91536061 is about 9567.4479878388. The cubic root of 91536061 is about 450.6756287267.

The spelling of 91536061 in words is "ninety-one million, five hundred thirty-six thousand, sixty-one".