82591953 has 4 divisors (see below), whose sum is σ = 110122608. Its totient is φ = 55061300.

The previous prime is 82591939. The next prime is 82591961. The reversal of 82591953 is 35919528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82591953 - 2⁵ = 82591921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82596953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13765323 + ... + 13765328.

It is an arithmetic number, because the mean of its divisors is an integer number (27530652).

Almost surely, 2^82591953 is an apocalyptic number.

It is an amenable number.

82591953 is a deficient number, since it is larger than the sum of its proper divisors (27530655).

82591953 is a wasteful number, since it uses less digits than its factorization.

82591953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27530654.

The product of its digits is 97200, while the sum is 42.

The square root of 82591953 is about 9088.0114986723. The cubic root of 82591953 is about 435.4910612452.

The spelling of 82591953 in words is "eighty-two million, five hundred ninety-one thousand, nine hundred fifty-three".