91473 has 4 divisors (see below), whose sum is σ = 121968. Its totient is φ = 60980.

The previous prime is 91463. The next prime is 91493. The reversal of 91473 is 37419.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37419 = 3 ⋅12473.

It is a cyclic number.

It is not a de Polignac number, because 91473 - 2⁴ = 91457 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91473.

It is not an unprimeable number, because it can be changed into a prime (91423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15243 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (30492).

2⁹¹⁴⁷³ is an apocalyptic number.

It is an amenable number.

91473 is a deficient number, since it is larger than the sum of its proper divisors (30495).

91473 is a wasteful number, since it uses less digits than its factorization.

91473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30494.

The product of its digits is 756, while the sum is 24.

The square root of 91473 is about 302.4450363289. The cubic root of 91473 is about 45.0572111838.

Adding to 91473 its product of digits (756), we get a palindrome (92229).

The spelling of 91473 in words is "ninety-one thousand, four hundred seventy-three".