855328515 has 16 divisors (see below), whose sum is σ = 1368900000. Its totient is φ = 456050432.

The previous prime is 855328501. The next prime is 855328547. The reversal of 855328515 is 515823558.

It is a Cunningham number, because it is equal to 29246²-1.

It is a cyclic number.

It is not a de Polignac number, because 855328515 - 2⁶ = 855328451 is a prime.

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, 82861 + ... + 92609.

It is an arithmetic number, because the mean of its divisors is an integer number (85556250).

Almost surely, 2^855328515 is an apocalyptic number.

855328515 is a deficient number, since it is larger than the sum of its proper divisors (513571485).

855328515 is a wasteful number, since it uses less digits than its factorization.

855328515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15606.

The product of its digits is 240000, while the sum is 42.

The square root of 855328515 is about 29245.9999829036. Note that the first 4 decimals coincide. The cubic root of 855328515 is about 949.2435400083.

The spelling of 855328515 in words is "eight hundred fifty-five million, three hundred twenty-eight thousand, five hundred fifteen".