82501979 has 8 divisors (see below), whose sum is σ = 94437600. Its totient is φ = 70603776.

The previous prime is 82501949. The next prime is 82501987. The reversal of 82501979 is 97910528.

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-82501979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82501919) 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, 4454 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (11804700).

Almost surely, 2^82501979 is an apocalyptic number.

82501979 is a deficient number, since it is larger than the sum of its proper divisors (11935621).

82501979 is a wasteful number, since it uses less digits than its factorization.

82501979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18709.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 82501979 is about 9083.0600020037. The cubic root of 82501979 is about 435.3328654070.

The spelling of 82501979 in words is "eighty-two million, five hundred one thousand, nine hundred seventy-nine".