82072751 has 2 divisors, whose sum is σ = 82072752. Its totient is φ = 82072750.

The previous prime is 82072747. The next prime is 82072759. The reversal of 82072751 is 15727028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82072751 - 2² = 82072747 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82072759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41036375 + 41036376.

It is an arithmetic number, because the mean of its divisors is an integer number (41036376).

Almost surely, 2^82072751 is an apocalyptic number.

82072751 is a deficient number, since it is larger than the sum of its proper divisors (1).

82072751 is an equidigital number, since it uses as much as digits as its factorization.

82072751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 82072751 is about 9059.4012495308. The cubic root of 82072751 is about 434.5765924577.

Adding to 82072751 its reverse (15727028), we get a palindrome (97799779).

The spelling of 82072751 in words is "eighty-two million, seventy-two thousand, seven hundred fifty-one".