91552573 has 8 divisors (see below), whose sum is σ = 105259392. Its totient is φ = 78002736.

The previous prime is 91552553. The next prime is 91552607. The reversal of 91552573 is 37525519.

It is a happy number.

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

It is not a de Polignac number, because 91552573 - 2⁹ = 91552061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91552543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37990 + ... + 40327.

It is an arithmetic number, because the mean of its divisors is an integer number (13157424).

Almost surely, 2^91552573 is an apocalyptic number.

It is an amenable number.

91552573 is a deficient number, since it is larger than the sum of its proper divisors (13706819).

91552573 is a wasteful number, since it uses less digits than its factorization.

91552573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78491.

The product of its digits is 47250, while the sum is 37.

The square root of 91552573 is about 9568.3108749664. The cubic root of 91552573 is about 450.7027259111.

The spelling of 91552573 in words is "ninety-one million, five hundred fifty-two thousand, five hundred seventy-three".