91470559 has 4 divisors (see below), whose sum is σ = 91490616. Its totient is φ = 91450504.

The previous prime is 91470539. The next prime is 91470569. The reversal of 91470559 is 95507419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91470559 - 2¹⁵ = 91437791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91470529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492 + ... + 13534.

It is an arithmetic number, because the mean of its divisors is an integer number (22872654).

Almost surely, 2^91470559 is an apocalyptic number.

91470559 is a deficient number, since it is larger than the sum of its proper divisors (20057).

91470559 is a wasteful number, since it uses less digits than its factorization.

91470559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20056.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 91470559 is about 9564.0242053228. The cubic root of 91470559 is about 450.5681038928.

It can be divided in two parts, 91470 and 559, that added together give a palindrome (92029).

The spelling of 91470559 in words is "ninety-one million, four hundred seventy thousand, five hundred fifty-nine".