1015120056 has 32 divisors (see below), whose sum is σ = 2538581760. Its totient is φ = 338269152.

The previous prime is 1015120039. The next prime is 1015120063. The reversal of 1015120056 is 6500215101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144481 + ... + 151343.

It is an arithmetic number, because the mean of its divisors is an integer number (79330680).

Almost surely, 2^1015120056 is an apocalyptic number.

It is an amenable number.

1015120056 is an abundant number, since it is smaller than the sum of its proper divisors (1523461704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1015120056 is a wasteful number, since it uses less digits than its factorization.

1015120056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13035 (or 13031 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1015120056 is about 31860.9487617679. The cubic root of 1015120056 is about 1005.0148281271.

Adding to 1015120056 its reverse (6500215101), we get a palindrome (7515335157).

The spelling of 1015120056 in words is "one billion, fifteen million, one hundred twenty thousand, fifty-six".