82172441 has 16 divisors (see below), whose sum is σ = 95889024. Its totient is φ = 69721344.

The previous prime is 82172437. The next prime is 82172479. The reversal of 82172441 is 14427128.

It is a cyclic number.

It is not a de Polignac number, because 82172441 - 2² = 82172437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82172941) 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, 5180 + ... + 13826.

It is an arithmetic number, because the mean of its divisors is an integer number (5993064).

Almost surely, 2^82172441 is an apocalyptic number.

It is an amenable number.

82172441 is a deficient number, since it is larger than the sum of its proper divisors (13716583).

82172441 is a wasteful number, since it uses less digits than its factorization.

82172441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8720.

The product of its digits is 3584, while the sum is 29.

The square root of 82172441 is about 9064.9015990247. The cubic root of 82172441 is about 434.7524746719.

Adding to 82172441 its reverse (14427128), we get a palindrome (96599569).

The spelling of 82172441 in words is "eighty-two million, one hundred seventy-two thousand, four hundred forty-one".