91162560 has 56 divisors (see below), whose sum is σ = 289444176. Its totient is φ = 24309760.

The previous prime is 91162559. The next prime is 91162567. The reversal of 91162560 is 6526119.

It is a super-2 number, since 2×91162560² = 16621224691507200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91162567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46521 + ... + 48440.

It is an arithmetic number, because the mean of its divisors is an integer number (5168646).

Almost surely, 2^91162560 is an apocalyptic number.

It is an amenable number.

91162560 is an abundant number, since it is smaller than the sum of its proper divisors (198281616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91162560 is a wasteful number, since it uses less digits than its factorization.

91162560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94981 (or 94971 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 91162560 is about 9547.9086715364. The cubic root of 91162560 is about 450.0618186678.

Adding to 91162560 its reverse (6526119), we get a palindrome (97688679).

The spelling of 91162560 in words is "ninety-one million, one hundred sixty-two thousand, five hundred sixty".