82213547 has 16 divisors (see below), whose sum is σ = 95528160. Its totient is φ = 70067712.

The previous prime is 82213517. The next prime is 82213559. The reversal of 82213547 is 74531228.

It is not a de Polignac number, because 82213547 - 2¹⁸ = 81951403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82213507) 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, 8204 + ... + 15222.

It is an arithmetic number, because the mean of its divisors is an integer number (5970510).

Almost surely, 2^82213547 is an apocalyptic number.

82213547 is a deficient number, since it is larger than the sum of its proper divisors (13314613).

82213547 is a wasteful number, since it uses less digits than its factorization.

82213547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7102.

The product of its digits is 13440, while the sum is 32.

The square root of 82213547 is about 9067.1686319380. The cubic root of 82213547 is about 434.8249562157.

The spelling of 82213547 in words is "eighty-two million, two hundred thirteen thousand, five hundred forty-seven".