91725146 has 8 divisors (see below), whose sum is σ = 141306420. Its totient is φ = 44623008.

The previous prime is 91725143. The next prime is 91725167. The reversal of 91725146 is 64152719.

It can be written as a sum of positive squares in 2 ways, for example, as 91680625 + 44521 = 9575^2 + 211^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91725143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619691 + ... + 619838.

Almost surely, 2^91725146 is an apocalyptic number.

91725146 is a deficient number, since it is larger than the sum of its proper divisors (49581274).

91725146 is a wasteful number, since it uses less digits than its factorization.

91725146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239568.

The product of its digits is 15120, while the sum is 35.

The square root of 91725146 is about 9577.3245742222. The cubic root of 91725146 is about 450.9857338044.

The spelling of 91725146 in words is "ninety-one million, seven hundred twenty-five thousand, one hundred forty-six".