82819501 has 2 divisors, whose sum is σ = 82819502. Its totient is φ = 82819500.

The previous prime is 82819493. The next prime is 82819511. The reversal of 82819501 is 10591828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68906601 + 13912900 = 8301^2 + 3730^2 .

It is a cyclic number.

It is not a de Polignac number, because 82819501 - 2³ = 82819493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82819511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41409750 + 41409751.

It is an arithmetic number, because the mean of its divisors is an integer number (41409751).

Almost surely, 2^82819501 is an apocalyptic number.

It is an amenable number.

82819501 is a deficient number, since it is larger than the sum of its proper divisors (1).

82819501 is an equidigital number, since it uses as much as digits as its factorization.

82819501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 82819501 is about 9100.5220179944. The cubic root of 82819501 is about 435.8906330769.

The spelling of 82819501 in words is "eighty-two million, eight hundred nineteen thousand, five hundred one".