91125005 has 8 divisors (see below), whose sum is σ = 109577472. Its totient is φ = 72748368.

The previous prime is 91124983. The next prime is 91125017. The reversal of 91125005 is 50052119.

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

It is a cyclic number.

It is not a de Polignac number, because 91125005 - 2⁶ = 91124941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16277 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (13697184).

Almost surely, 2^91125005 is an apocalyptic number.

It is an amenable number.

91125005 is a deficient number, since it is larger than the sum of its proper divisors (18452467).

91125005 is a wasteful number, since it uses less digits than its factorization.

91125005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37915.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 91125005 is about 9545.9418079098. The cubic root of 91125005 is about 450.0000082305. Note that the first 5 decimals are identical.

It can be divided in two parts, 9112500 and 5, that multiplied together give a square (45562500 = 6750²).

The spelling of 91125005 in words is "ninety-one million, one hundred twenty-five thousand, five".