82777511 has 2 divisors, whose sum is σ = 82777512. Its totient is φ = 82777510.

The previous prime is 82777493. The next prime is 82777523. The reversal of 82777511 is 11577728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82777511 - 2¹⁰ = 82776487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82777111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41388755 + 41388756.

It is an arithmetic number, because the mean of its divisors is an integer number (41388756).

Almost surely, 2^82777511 is an apocalyptic number.

82777511 is a deficient number, since it is larger than the sum of its proper divisors (1).

82777511 is an equidigital number, since it uses as much as digits as its factorization.

82777511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 38.

The square root of 82777511 is about 9098.2147149867. The cubic root of 82777511 is about 435.8169542066.

The spelling of 82777511 in words is "eighty-two million, seven hundred seventy-seven thousand, five hundred eleven".