1115901256 has 32 divisors (see below), whose sum is σ = 2151864000. Its totient is φ = 542203200.

The previous prime is 1115901253. The next prime is 1115901257. The reversal of 1115901256 is 6521095111.

It is a super-2 number, since 2×1115901256² = 2490471226284755072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1115901251) by changing a digit.

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, 60306 + ... + 76606.

It is an arithmetic number, because the mean of its divisors is an integer number (67245750).

Almost surely, 2^1115901256 is an apocalyptic number.

It is an amenable number.

1115901256 is a deficient number, since it is larger than the sum of its proper divisors (1035962744).

1115901256 is a wasteful number, since it uses less digits than its factorization.

1115901256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16549 (or 16545 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 31.

The square root of 1115901256 is about 33405.1082321252. The cubic root of 1115901256 is about 1037.2304442412.

Adding to 1115901256 its reverse (6521095111), we get a palindrome (7636996367).

The spelling of 1115901256 in words is "one billion, one hundred fifteen million, nine hundred one thousand, two hundred fifty-six".