82211837 has 4 divisors (see below), whose sum is σ = 82479936. Its totient is φ = 81943740.

The previous prime is 82211827. The next prime is 82211869. The reversal of 82211837 is 73811228.

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 not a de Polignac number, because 82211837 - 2¹⁴ = 82195453 is a prime.

It is a super-2 number, since 2×82211837² = 13517572285829138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82211827) 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, 133589 + ... + 134202.

It is an arithmetic number, because the mean of its divisors is an integer number (20619984).

Almost surely, 2^82211837 is an apocalyptic number.

It is an amenable number.

82211837 is a deficient number, since it is larger than the sum of its proper divisors (268099).

82211837 is a wasteful number, since it uses less digits than its factorization.

82211837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268098.

The product of its digits is 5376, while the sum is 32.

The square root of 82211837 is about 9067.0743351977. The cubic root of 82211837 is about 434.8219414821.

The spelling of 82211837 in words is "eighty-two million, two hundred eleven thousand, eight hundred thirty-seven".