815085801 has 8 divisors (see below), whose sum is σ = 1207534560. Its totient is φ = 543390516.

The previous prime is 815085793. The next prime is 815085811. The reversal of 815085801 is 108580518.

It is not a de Polignac number, because 815085801 - 2³ = 815085793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (815085811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15094155 + ... + 15094208.

It is an arithmetic number, because the mean of its divisors is an integer number (150941820).

Almost surely, 2^815085801 is an apocalyptic number.

It is an amenable number.

815085801 is a deficient number, since it is larger than the sum of its proper divisors (392448759).

815085801 is a wasteful number, since it uses less digits than its factorization.

815085801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30188372 (or 30188366 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 815085801 is about 28549.7075466632. The cubic root of 815085801 is about 934.1166415533.

The spelling of 815085801 in words is "eight hundred fifteen million, eighty-five thousand, eight hundred one".