82122471 has 16 divisors (see below), whose sum is σ = 122208000. Its totient is φ = 54503064.

The previous prime is 82122463. The next prime is 82122479. The reversal of 82122471 is 17422128.

It is an interprime number because it is at equal distance from previous prime (82122463) and next prime (82122479).

It is not a de Polignac number, because 82122471 - 2³ = 82122463 is a prime.

It is a super-3 number, since 3×82122471³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82122479) 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, 571 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (7638000).

Almost surely, 2^82122471 is an apocalyptic number.

82122471 is a deficient number, since it is larger than the sum of its proper divisors (40085529).

82122471 is a wasteful number, since it uses less digits than its factorization.

82122471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13635 (or 13629 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 82122471 is about 9062.1449447689. The cubic root of 82122471 is about 434.6643308205.

Adding to 82122471 its reverse (17422128), we get a palindrome (99544599).

The spelling of 82122471 in words is "eighty-two million, one hundred twenty-two thousand, four hundred seventy-one".