72047 has 2 divisors, whose sum is σ = 72048. Its totient is φ = 72046.

The previous prime is 72043. The next prime is 72053. The reversal of 72047 is 74027.

It is a weak prime.

It is an emirp because it is prime and its reverse (74027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72047 - 2² = 72043 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36023 + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (36024).

2⁷²⁰⁴⁷ is an apocalyptic number.

72047 is a deficient number, since it is larger than the sum of its proper divisors (1).

72047 is an equidigital number, since it uses as much as digits as its factorization.

72047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 72047 is about 268.4157223413. The cubic root of 72047 is about 41.6107267087.

Subtracting from 72047 its sum of digits (20), we obtain a palindrome (72027).

It can be divided in two parts, 720 and 47, that added together give a palindrome (767).

The spelling of 72047 in words is "seventy-two thousand, forty-seven", and thus it is an iban number.