72214543 has 6 divisors (see below), whose sum is σ = 73313016. Its totient is φ = 71132292.

The previous prime is 72214537. The next prime is 72214547. The reversal of 72214543 is 34541227.

It is a de Polignac number, because none of the positive numbers 2^k-72214543 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 (72214547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3555 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (12218836).

Almost surely, 2^72214543 is an apocalyptic number.

72214543 is a deficient number, since it is larger than the sum of its proper divisors (1098473).

72214543 is an equidigital number, since it uses as much as digits as its factorization.

72214543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16221 (or 16154 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 72214543 is about 8497.9140381625. The cubic root of 72214543 is about 416.4295654426.

The spelling of 72214543 in words is "seventy-two million, two hundred fourteen thousand, five hundred forty-three".