91587741 has 16 divisors (see below), whose sum is σ = 139749504. Its totient is φ = 52265664.

The previous prime is 91587737. The next prime is 91587773. The reversal of 91587741 is 14778519.

It is not a de Polignac number, because 91587741 - 2² = 91587737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91587693 and 91587702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91587791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15931 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (8734344).

Almost surely, 2^91587741 is an apocalyptic number.

It is an amenable number.

91587741 is a deficient number, since it is larger than the sum of its proper divisors (48161763).

91587741 is a wasteful number, since it uses less digits than its factorization.

91587741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5860.

The product of its digits is 70560, while the sum is 42.

The square root of 91587741 is about 9570.1484314508. The cubic root of 91587741 is about 450.7604278553.

The spelling of 91587741 in words is "ninety-one million, five hundred eighty-seven thousand, seven hundred forty-one".