82157455 has 8 divisors (see below), whose sum is σ = 98875152. Its totient is φ = 65535168.

The previous prime is 82157419. The next prime is 82157461. The reversal of 82157455 is 55475128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82157455 - 2²¹ = 80060303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21942 + ... + 25411.

It is an arithmetic number, because the mean of its divisors is an integer number (12359394).

Almost surely, 2^82157455 is an apocalyptic number.

82157455 is a deficient number, since it is larger than the sum of its proper divisors (16717697).

82157455 is a wasteful number, since it uses less digits than its factorization.

82157455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47705.

The product of its digits is 56000, while the sum is 37.

The square root of 82157455 is about 9064.0749665920. The cubic root of 82157455 is about 434.7260440884.

The spelling of 82157455 in words is "eighty-two million, one hundred fifty-seven thousand, four hundred fifty-five".