1115520053 has 16 divisors (see below), whose sum is σ = 1147426560. Its totient is φ = 1084200000.

The previous prime is 1115519959. The next prime is 1115520071. The reversal of 1115520053 is 3500255111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1115520053 - 2²² = 1111325749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115520853) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2002451 + ... + 2003007.

It is an arithmetic number, because the mean of its divisors is an integer number (71714160).

Almost surely, 2^1115520053 is an apocalyptic number.

It is an amenable number.

1115520053 is a deficient number, since it is larger than the sum of its proper divisors (31906507).

1115520053 is a wasteful number, since it uses less digits than its factorization.

1115520053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1115520053 is about 33399.4019856644. The cubic root of 1115520053 is about 1037.1123213675.

Adding to 1115520053 its reverse (3500255111), we get a palindrome (4615775164).

The spelling of 1115520053 in words is "one billion, one hundred fifteen million, five hundred twenty thousand, fifty-three".