82511001 has 8 divisors (see below), whose sum is σ = 122238560. Its totient is φ = 55007316.

The previous prime is 82510973. The next prime is 82511021. The reversal of 82511001 is 10011528.

It is not a de Polignac number, because 82511001 - 2¹¹ = 82508953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82511021) 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, 1527955 + ... + 1528008.

It is an arithmetic number, because the mean of its divisors is an integer number (15279820).

Almost surely, 2^82511001 is an apocalyptic number.

It is an amenable number.

82511001 is a deficient number, since it is larger than the sum of its proper divisors (39727559).

82511001 is a wasteful number, since it uses less digits than its factorization.

82511001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055972 (or 3055966 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 82511001 is about 9083.5566272248. The cubic root of 82511001 is about 435.3487334302.

Adding to 82511001 its reverse (10011528), we get a palindrome (92522529).

The spelling of 82511001 in words is "eighty-two million, five hundred eleven thousand, one".