91530842 has 16 divisors (see below), whose sum is σ = 148512840. Its totient is φ = 42057792.

The previous prime is 91530833. The next prime is 91530853. The reversal of 91530842 is 24803519.

It can be written as a sum of positive squares in 4 ways, for example, as 57320041 + 34210801 = 7571^2 + 5849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91530799 and 91530808.

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, 1733 + ... + 13640.

Almost surely, 2^91530842 is an apocalyptic number.

91530842 is a deficient number, since it is larger than the sum of its proper divisors (56981998).

91530842 is a wasteful number, since it uses less digits than its factorization.

91530842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15617.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 91530842 is about 9567.1752361917. The cubic root of 91530842 is about 450.6670633562.

The spelling of 91530842 in words is "ninety-one million, five hundred thirty thousand, eight hundred forty-two".