815030056 has 8 divisors (see below), whose sum is σ = 1528181370. Its totient is φ = 407515024.

The previous prime is 815030053. The next prime is 815030059. The reversal of 815030056 is 650030518.

It is an interprime number because it is at equal distance from previous prime (815030053) and next prime (815030059).

It can be written as a sum of positive squares in only one way, i.e., 813960900 + 1069156 = 28530^2 + 1034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (815030053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50939371 + ... + 50939386.

Almost surely, 2^815030056 is an apocalyptic number.

It is an amenable number.

815030056 is a deficient number, since it is larger than the sum of its proper divisors (713151314).

815030056 is a wasteful number, since it uses less digits than its factorization.

815030056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101878763 (or 101878759 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 815030056 is about 28548.7312502675. The cubic root of 815030056 is about 934.0953458323.

The spelling of 815030056 in words is "eight hundred fifteen million, thirty thousand, fifty-six".