82017953 has 4 divisors (see below), whose sum is σ = 82376340. Its totient is φ = 81659568.

The previous prime is 82017941. The next prime is 82017967. The reversal of 82017953 is 35971028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74356129 + 7661824 = 8623^2 + 2768^2 .

It is not a de Polignac number, because 82017953 - 2¹⁰ = 82016929 is a prime.

It is a super-2 number, since 2×82017953² = 13453889228620418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82017913) 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, 178850 + ... + 179307.

It is an arithmetic number, because the mean of its divisors is an integer number (20594085).

Almost surely, 2^82017953 is an apocalyptic number.

It is an amenable number.

82017953 is a deficient number, since it is larger than the sum of its proper divisors (358387).

82017953 is a wasteful number, since it uses less digits than its factorization.

82017953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358386.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 82017953 is about 9056.3763724792. The cubic root of 82017953 is about 434.4798521479.

The spelling of 82017953 in words is "eighty-two million, seventeen thousand, nine hundred fifty-three".