91472530 has 8 divisors (see below), whose sum is σ = 164650572. Its totient is φ = 36589008.

The previous prime is 91472519. The next prime is 91472531. The reversal of 91472530 is 3527419.

It can be written as a sum of positive squares in 2 ways, for example, as 90878089 + 594441 = 9533^2 + 771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 91472492 and 91472501.

It is not an unprimeable number, because it can be changed into a prime (91472531) 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 3 ways as a sum of consecutive naturals, for example, 4573617 + ... + 4573636.

Almost surely, 2^91472530 is an apocalyptic number.

91472530 is a deficient number, since it is larger than the sum of its proper divisors (73178042).

91472530 is a wasteful number, since it uses less digits than its factorization.

91472530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9147260.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 91472530 is about 9564.1272471669. The cubic root of 91472530 is about 450.5713401376.

Adding to 91472530 its reverse (3527419), we get a palindrome (94999949).

The spelling of 91472530 in words is "ninety-one million, four hundred seventy-two thousand, five hundred thirty".