91245712 has 10 divisors (see below), whose sum is σ = 176788598. Its totient is φ = 45622848.

The previous prime is 91245697. The next prime is 91245751. The reversal of 91245712 is 21754219.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 28772496 = 7904^2 + 5364^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2851413 + ... + 2851444.

Almost surely, 2^91245712 is an apocalyptic number.

It is an amenable number.

91245712 is a deficient number, since it is larger than the sum of its proper divisors (85542886).

91245712 is a wasteful number, since it uses less digits than its factorization.

91245712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702865 (or 5702859 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 91245712 is about 9552.2621404566. The cubic root of 91245712 is about 450.1986152055.

The spelling of 91245712 in words is "ninety-one million, two hundred forty-five thousand, seven hundred twelve".