82154801 has 4 divisors (see below), whose sum is σ = 82188900. Its totient is φ = 82120704.

The previous prime is 82154789. The next prime is 82154819. The reversal of 82154801 is 10845128.

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 44209201 + 37945600 = 6649^2 + 6160^2 .

It is a cyclic number.

It is not a de Polignac number, because 82154801 - 2¹⁴ = 82138417 is a prime.

It is a super-3 number, since 3×82154801³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82154101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13136 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (20547225).

Almost surely, 2^82154801 is an apocalyptic number.

It is an amenable number.

82154801 is a deficient number, since it is larger than the sum of its proper divisors (34099).

82154801 is a wasteful number, since it uses less digits than its factorization.

82154801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34098.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 82154801 is about 9063.9285632666. The cubic root of 82154801 is about 434.7213629334.

Adding to 82154801 its reverse (10845128), we get a palindrome (92999929).

The spelling of 82154801 in words is "eighty-two million, one hundred fifty-four thousand, eight hundred one".