82501801 has 2 divisors, whose sum is σ = 82501802. Its totient is φ = 82501800.

The previous prime is 82501789. The next prime is 82501807. The reversal of 82501801 is 10810528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78340201 + 4161600 = 8851^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 82501801 - 2⁷ = 82501673 is a prime.

It is not a weakly prime, because it can be changed into another prime (82501807) 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 as a sum of consecutive naturals, namely, 41250900 + 41250901.

It is an arithmetic number, because the mean of its divisors is an integer number (41250901).

Almost surely, 2^82501801 is an apocalyptic number.

It is an amenable number.

82501801 is a deficient number, since it is larger than the sum of its proper divisors (1).

82501801 is an equidigital number, since it uses as much as digits as its factorization.

82501801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 82501801 is about 9083.0502035385. The cubic root of 82501801 is about 435.3325523264.

The spelling of 82501801 in words is "eighty-two million, five hundred one thousand, eight hundred one".