91055368 has 8 divisors (see below), whose sum is σ = 170728830. Its totient is φ = 45527680.

The previous prime is 91055347. The next prime is 91055407. The reversal of 91055368 is 86355019.

It can be written as a sum of positive squares in only one way, i.e., 90668484 + 386884 = 9522^2 + 622^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690953 + ... + 5690968.

Almost surely, 2^91055368 is an apocalyptic number.

It is an amenable number.

91055368 is a deficient number, since it is larger than the sum of its proper divisors (79673462).

91055368 is a wasteful number, since it uses less digits than its factorization.

91055368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381927 (or 11381923 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 91055368 is about 9542.2936446119. The cubic root of 91055368 is about 449.8853502162.

The spelling of 91055368 in words is "ninety-one million, fifty-five thousand, three hundred sixty-eight".