91525 has 12 divisors (see below), whose sum is σ = 129952. Its totient is φ = 62640.
The previous prime is 91513. The next prime is 91529. The reversal of 91525 is 52519.
It is not a de Polignac number, because 91525 - 25 = 91493 is a prime.
It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.
It is an Ulam number.
It is a Duffinian number.
It is a zygodrome in base 3.
It is a junction number, because it is equal to n+sod(n) for n = 91496 and 91505.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (91529) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87 + ... + 436.
291525 is an apocalyptic number.
91525 is the 175-th octagonal number.
It is an amenable number.
91525 is a deficient number, since it is larger than the sum of its proper divisors (38427).
91525 is a wasteful number, since it uses less digits than its factorization.
91525 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 540 (or 535 counting only the distinct ones).
The product of its digits is 450, while the sum is 22.
The square root of 91525 is about 302.5309901481. The cubic root of 91525 is about 45.0657475138.
It can be divided in two parts, 91 and 525, that added together give a palindrome (616).
The spelling of 91525 in words is "ninety-one thousand, five hundred twenty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •