82145801 has 4 divisors (see below), whose sum is σ = 83893632. Its totient is φ = 80397972.

The previous prime is 82145771. The next prime is 82145827. The reversal of 82145801 is 10854128.

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 a de Polignac number, because none of the positive numbers 2^k-82145801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82145831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873845 + ... + 873938.

It is an arithmetic number, because the mean of its divisors is an integer number (20973408).

Almost surely, 2^82145801 is an apocalyptic number.

It is an amenable number.

82145801 is a deficient number, since it is larger than the sum of its proper divisors (1747831).

82145801 is a wasteful number, since it uses less digits than its factorization.

82145801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747830.

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

The square root of 82145801 is about 9063.4320762060. The cubic root of 82145801 is about 434.7054878817.

Adding to 82145801 its reverse (10854128), we get a palindrome (92999929).

The spelling of 82145801 in words is "eighty-two million, one hundred forty-five thousand, eight hundred one".