91347543 has 24 divisors (see below), whose sum is σ = 151319168. Its totient is φ = 52017552.

The previous prime is 91347541. The next prime is 91347551. The reversal of 91347543 is 34574319.

It is not a de Polignac number, because 91347543 - 2¹ = 91347541 is a prime.

It is a super-2 number, since 2×91347543² = 16688747224273698, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (45360) is a multiple of the sum of its prime divisors (5040).

It is a junction number, because it is equal to n+sod(n) for n = 91347498 and 91347507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91347541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16980 + ... + 21702.

Almost surely, 2^91347543 is an apocalyptic number.

91347543 is a deficient number, since it is larger than the sum of its proper divisors (59971625).

91347543 is a wasteful number, since it uses less digits than its factorization.

91347543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5040 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 91347543 is about 9557.5908575331. The cubic root of 91347543 is about 450.3660281195.

The spelling of 91347543 in words is "ninety-one million, three hundred forty-seven thousand, five hundred forty-three".