91046143 has 4 divisors (see below), whose sum is σ = 91139008. Its totient is φ = 90953280.

The previous prime is 91046107. The next prime is 91046149. The reversal of 91046143 is 34164019.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91046143 - 2²¹ = 88948991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91046149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44946 + ... + 46927.

It is an arithmetic number, because the mean of its divisors is an integer number (22784752).

Almost surely, 2^91046143 is an apocalyptic number.

91046143 is a deficient number, since it is larger than the sum of its proper divisors (92865).

91046143 is an equidigital number, since it uses as much as digits as its factorization.

91046143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92864.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 91046143 is about 9541.8102580171. The cubic root of 91046143 is about 449.8701567773.

The spelling of 91046143 in words is "ninety-one million, forty-six thousand, one hundred forty-three".