82144701 has 6 divisors (see below), whose sum is σ = 118653470. Its totient is φ = 54763128.

The previous prime is 82144693. The next prime is 82144709. The reversal of 82144701 is 10744128.

It is an interprime number because it is at equal distance from previous prime (82144693) and next prime (82144709).

It can be written as a sum of positive squares in only one way, i.e., 45239076 + 36905625 = 6726^2 + 6075^2 .

It is not a de Polignac number, because 82144701 - 2³ = 82144693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82144709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4563586 + ... + 4563603.

Almost surely, 2^82144701 is an apocalyptic number.

It is an amenable number.

82144701 is a deficient number, since it is larger than the sum of its proper divisors (36508769).

82144701 is a wasteful number, since it uses less digits than its factorization.

82144701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9127195 (or 9127192 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 82144701 is about 9063.3713925890. The cubic root of 82144701 is about 434.7035475181.

Adding to 82144701 its reverse (10744128), we get a palindrome (92888829).

The spelling of 82144701 in words is "eighty-two million, one hundred forty-four thousand, seven hundred one".