82511895 has 16 divisors (see below), whose sum is σ = 132312960. Its totient is φ = 43908384.

The previous prime is 82511867. The next prime is 82511903. The reversal of 82511895 is 59811528.

It is not a de Polignac number, because 82511895 - 2¹⁶ = 82446359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116 + ... + 12894.

It is an arithmetic number, because the mean of its divisors is an integer number (8269560).

Almost surely, 2^82511895 is an apocalyptic number.

82511895 is a deficient number, since it is larger than the sum of its proper divisors (49801065).

82511895 is a wasteful number, since it uses less digits than its factorization.

82511895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254.

The product of its digits is 28800, while the sum is 39.

The square root of 82511895 is about 9083.6058368910. The cubic root of 82511895 is about 435.3503057473.

It can be divided in two parts, 825 and 11895, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 82511895 in words is "eighty-two million, five hundred eleven thousand, eight hundred ninety-five".