82715245 has 32 divisors (see below), whose sum is σ = 108428544. Its totient is φ = 60403200.

The previous prime is 82715231. The next prime is 82715249. The reversal of 82715245 is 54251728.

It is a happy number.

It is not a de Polignac number, because 82715245 - 2⁷ = 82715117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82715245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82715249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249730 + ... + 250060.

It is an arithmetic number, because the mean of its divisors is an integer number (3388392).

Almost surely, 2^82715245 is an apocalyptic number.

It is an amenable number.

82715245 is a deficient number, since it is larger than the sum of its proper divisors (25713299).

82715245 is a wasteful number, since it uses less digits than its factorization.

82715245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 22400, while the sum is 34.

The square root of 82715245 is about 9094.7921911388. The cubic root of 82715245 is about 435.7076516311.

The spelling of 82715245 in words is "eighty-two million, seven hundred fifteen thousand, two hundred forty-five".