91552643 has 16 divisors (see below), whose sum is σ = 114534336. Its totient is φ = 71245440.

The previous prime is 91552607. The next prime is 91552651. The reversal of 91552643 is 34625519.

It is not a de Polignac number, because 91552643 - 2⁸ = 91552387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91552693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2696 + ... + 13797.

It is an arithmetic number, because the mean of its divisors is an integer number (7158396).

Almost surely, 2^91552643 is an apocalyptic number.

91552643 is a deficient number, since it is larger than the sum of its proper divisors (22981693).

91552643 is a wasteful number, since it uses less digits than its factorization.

91552643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16574.

The product of its digits is 32400, while the sum is 35.

The square root of 91552643 is about 9568.3145328736. The cubic root of 91552643 is about 450.7028407783.

The spelling of 91552643 in words is "ninety-one million, five hundred fifty-two thousand, six hundred forty-three".