82353921 has 16 divisors (see below), whose sum is σ = 120020544. Its totient is φ = 49921344.

The previous prime is 82353907. The next prime is 82353977. The reversal of 82353921 is 12935328.

It is not a de Polignac number, because 82353921 - 2⁵ = 82353889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82353121) 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, 13146 + ... + 18371.

It is an arithmetic number, because the mean of its divisors is an integer number (7501284).

Almost surely, 2^82353921 is an apocalyptic number.

It is an amenable number.

82353921 is a deficient number, since it is larger than the sum of its proper divisors (37666623).

82353921 is a wasteful number, since it uses less digits than its factorization.

82353921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31600.

The product of its digits is 12960, while the sum is 33.

The square root of 82353921 is about 9074.9061152168. The cubic root of 82353921 is about 435.0722934412.

The spelling of 82353921 in words is "eighty-two million, three hundred fifty-three thousand, nine hundred twenty-one".