82755915 has 64 divisors (see below), whose sum is σ = 154732032. Its totient is φ = 37324800.

The previous prime is 82755913. The next prime is 82755919. The reversal of 82755915 is 51955728.

It is not a de Polignac number, because 82755915 - 2¹ = 82755913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82755913) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 457125 + ... + 457305.

It is an arithmetic number, because the mean of its divisors is an integer number (2417688).

Almost surely, 2^82755915 is an apocalyptic number.

82755915 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82755915 is a deficient number, since it is larger than the sum of its proper divisors (71976117).

82755915 is a wasteful number, since it uses less digits than its factorization.

82755915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its digits is 126000, while the sum is 42.

The square root of 82755915 is about 9097.0278113239. The cubic root of 82755915 is about 435.7790505077.

The spelling of 82755915 in words is "eighty-two million, seven hundred fifty-five thousand, nine hundred fifteen".