82050921 has 16 divisors (see below), whose sum is σ = 121723200. Its totient is φ = 54625824.

The previous prime is 82050919. The next prime is 82050931. The reversal of 82050921 is 12905028.

It is not a de Polignac number, because 82050921 - 2¹ = 82050919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (82050931) 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, 23965 + ... + 27173.

It is an arithmetic number, because the mean of its divisors is an integer number (7607700).

Almost surely, 2^82050921 is an apocalyptic number.

It is an amenable number.

82050921 is a deficient number, since it is larger than the sum of its proper divisors (39672279).

82050921 is a wasteful number, since it uses less digits than its factorization.

82050921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 82050921 is about 9058.1963436437. The cubic root of 82050921 is about 434.5380589690.

Adding to 82050921 its reverse (12905028), we get a palindrome (94955949).

The spelling of 82050921 in words is "eighty-two million, fifty thousand, nine hundred twenty-one".