82122547 has 4 divisors (see below), whose sum is σ = 88439680. Its totient is φ = 75805416.

The previous prime is 82122533. The next prime is 82122553. The reversal of 82122547 is 74522128.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82122547 - 2¹⁵ = 82089779 is a prime.

It is a super-2 number, since 2×82122547² = 13488225451534418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82122527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158547 + ... + 3158572.

It is an arithmetic number, because the mean of its divisors is an integer number (22109920).

Almost surely, 2^82122547 is an apocalyptic number.

82122547 is a deficient number, since it is larger than the sum of its proper divisors (6317133).

82122547 is a wasteful number, since it uses less digits than its factorization.

82122547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317132.

The product of its digits is 8960, while the sum is 31.

The square root of 82122547 is about 9062.1491380356. The cubic root of 82122547 is about 434.6644649067.

The spelling of 82122547 in words is "eighty-two million, one hundred twenty-two thousand, five hundred forty-seven".