82521937 has 8 divisors (see below), whose sum is σ = 83462400. Its totient is φ = 81586704.

The previous prime is 82521919. The next prime is 82521947. The reversal of 82521937 is 73912528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82521937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82521896 and 82521905.

It is not an unprimeable number, because it can be changed into a prime (82521947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36288 + ... + 38494.

It is an arithmetic number, because the mean of its divisors is an integer number (10432800).

Almost surely, 2^82521937 is an apocalyptic number.

It is an amenable number.

82521937 is a deficient number, since it is larger than the sum of its proper divisors (940463).

82521937 is a wasteful number, since it uses less digits than its factorization.

82521937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615.

The product of its digits is 30240, while the sum is 37.

The square root of 82521937 is about 9084.1585741333. The cubic root of 82521937 is about 435.3679662734.

The spelling of 82521937 in words is "eighty-two million, five hundred twenty-one thousand, nine hundred thirty-seven".