1115573551 has 16 divisors (see below), whose sum is σ = 1170237600. Its totient is φ = 1062489600.

The previous prime is 1115573539. The next prime is 1115573597. The reversal of 1115573551 is 1553755111.

It is a cyclic number.

It is not a de Polignac number, because 1115573551 - 2²³ = 1107184943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115513551) 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, 346035 + ... + 349243.

It is an arithmetic number, because the mean of its divisors is an integer number (73139850).

Almost surely, 2^1115573551 is an apocalyptic number.

1115573551 is a deficient number, since it is larger than the sum of its proper divisors (54664049).

1115573551 is a wasteful number, since it uses less digits than its factorization.

1115573551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450.

The product of its digits is 13125, while the sum is 34.

The square root of 1115573551 is about 33400.2028586654. The cubic root of 1115573551 is about 1037.1289003457.

The spelling of 1115573551 in words is "one billion, one hundred fifteen million, five hundred seventy-three thousand, five hundred fifty-one".