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91130 = 2513701
BaseRepresentation
bin10110001111111010
311122000012
4112033322
510404010
61541522
7526454
oct261772
9148005
1091130
1162516
12448a2
1332630
14252d4
151c005
hex163fa

91130 has 16 divisors (see below), whose sum is σ = 176904. Its totient is φ = 33600.

The previous prime is 91129. The next prime is 91139. The reversal of 91130 is 3119.

Added to its reverse (3119) it gives a square (94249 = 3072).

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 17689 = 271^2 + 133^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221 + ... + 480.

291130 is an apocalyptic number.

91130 is a deficient number, since it is larger than the sum of its proper divisors (85774).

91130 is a wasteful number, since it uses less digits than its factorization.

91130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 91130 is about 301.8774585821. The cubic root of 91130 is about 45.0008230302. Note that the first 3 decimals are identical.

Adding to 91130 its reverse (3119), we get a palindrome (94249).

The spelling of 91130 in words is "ninety-one thousand, one hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 701 1402 3505 7010 9113 18226 45565 91130