82537121 has 16 divisors (see below), whose sum is σ = 90105600. Its totient is φ = 75333888.

The previous prime is 82537111. The next prime is 82537151. The reversal of 82537121 is 12173528.

It is a cyclic number.

It is not a de Polignac number, because 82537121 - 2¹⁸ = 82274977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82537111) 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, 78920 + ... + 79958.

It is an arithmetic number, because the mean of its divisors is an integer number (5631600).

Almost surely, 2^82537121 is an apocalyptic number.

It is an amenable number.

82537121 is a deficient number, since it is larger than the sum of its proper divisors (7568479).

82537121 is a wasteful number, since it uses less digits than its factorization.

82537121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208.

The product of its digits is 3360, while the sum is 29.

The square root of 82537121 is about 9084.9942762778. The cubic root of 82537121 is about 435.3946671404.

The spelling of 82537121 in words is "eighty-two million, five hundred thirty-seven thousand, one hundred twenty-one".