82215337 has 4 divisors (see below), whose sum is σ = 86542480. Its totient is φ = 77888196.

The previous prime is 82215323. The next prime is 82215347. The reversal of 82215337 is 73351228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82215337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82215299 and 82215308.

It is not an unprimeable number, because it can be changed into a prime (82215347) 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, 2163543 + ... + 2163580.

It is an arithmetic number, because the mean of its divisors is an integer number (21635620).

Almost surely, 2^82215337 is an apocalyptic number.

It is an amenable number.

82215337 is a deficient number, since it is larger than the sum of its proper divisors (4327143).

82215337 is a wasteful number, since it uses less digits than its factorization.

82215337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327142.

The product of its digits is 10080, while the sum is 31.

The square root of 82215337 is about 9067.2673391712. The cubic root of 82215337 is about 434.8281119447.

The spelling of 82215337 in words is "eighty-two million, two hundred fifteen thousand, three hundred thirty-seven".