815053055 has 4 divisors (see below), whose sum is σ = 978063672. Its totient is φ = 652042440.

The previous prime is 815053039. The next prime is 815053123. The reversal of 815053055 is 550350518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550350518 = 2 ⋅275175259.

It is not a de Polignac number, because 815053055 - 2⁴ = 815053039 is a prime.

It is a super-2 number, since 2×815053055² = 1328622964929666050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 81505301 + ... + 81505310.

It is an arithmetic number, because the mean of its divisors is an integer number (244515918).

Almost surely, 2^815053055 is an apocalyptic number.

815053055 is a deficient number, since it is larger than the sum of its proper divisors (163010617).

815053055 is a wasteful number, since it uses less digits than its factorization.

815053055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163010616.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 815053055 is about 28549.1340499147. The cubic root of 815053055 is about 934.1041320346.

The spelling of 815053055 in words is "eight hundred fifteen million, fifty-three thousand, fifty-five".