82700251 has 2 divisors, whose sum is σ = 82700252. Its totient is φ = 82700250.

The previous prime is 82700243. The next prime is 82700269. The reversal of 82700251 is 15200728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82700251 - 2³ = 82700243 is a prime.

It is not a weakly prime, because it can be changed into another prime (82700851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41350125 + 41350126.

It is an arithmetic number, because the mean of its divisors is an integer number (41350126).

Almost surely, 2^82700251 is an apocalyptic number.

82700251 is a deficient number, since it is larger than the sum of its proper divisors (1).

82700251 is an equidigital number, since it uses as much as digits as its factorization.

82700251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 82700251 is about 9093.9678358789. The cubic root of 82700251 is about 435.6813227671.

Adding to 82700251 its reverse (15200728), we get a palindrome (97900979).

The spelling of 82700251 in words is "eighty-two million, seven hundred thousand, two hundred fifty-one".