91061130 has 16 divisors (see below), whose sum is σ = 218546784. Its totient is φ = 24282960.

The previous prime is 91061093. The next prime is 91061153. The reversal of 91061130 is 3116019.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91061097 and 91061106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517656 + ... + 1517715.

It is an arithmetic number, because the mean of its divisors is an integer number (13659174).

Almost surely, 2^91061130 is an apocalyptic number.

91061130 is an abundant number, since it is smaller than the sum of its proper divisors (127485654).

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

91061130 is a wasteful number, since it uses less digits than its factorization.

91061130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035381.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 91061130 is about 9542.5955588613. The cubic root of 91061130 is about 449.8948396245.

Adding to 91061130 its reverse (3116019), we get a palindrome (94177149).

The spelling of 91061130 in words is "ninety-one million, sixty-one thousand, one hundred thirty".