82215455 has 64 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 50519040.

The previous prime is 82215439. The next prime is 82215461. The reversal of 82215455 is 55451228.

It is not a de Polignac number, because 82215455 - 2⁴ = 82215439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1551209 + ... + 1551261.

It is an arithmetic number, because the mean of its divisors is an integer number (1959552).

Almost surely, 2^82215455 is an apocalyptic number.

82215455 is a deficient number, since it is larger than the sum of its proper divisors (43195873).

82215455 is a wasteful number, since it uses less digits than its factorization.

82215455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

The product of its digits is 16000, while the sum is 32.

The square root of 82215455 is about 9067.2738460907. The cubic root of 82215455 is about 434.8283199744.

The spelling of 82215455 in words is "eighty-two million, two hundred fifteen thousand, four hundred fifty-five".