1115542455 has 16 divisors (see below), whose sum is σ = 1790172384. Its totient is φ = 593187840.

The previous prime is 1115542453. The next prime is 1115542469. The reversal of 1115542455 is 5542455111.

It is a happy number.

It is not a de Polignac number, because 1115542455 - 2¹ = 1115542453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115542453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105286 + ... + 115395.

It is an arithmetic number, because the mean of its divisors is an integer number (111885774).

Almost surely, 2^1115542455 is an apocalyptic number.

1115542455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1115542455 is a deficient number, since it is larger than the sum of its proper divisors (674629929).

1115542455 is a wasteful number, since it uses less digits than its factorization.

1115542455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221026.

The product of its digits is 20000, while the sum is 33.

The square root of 1115542455 is about 33399.7373492667. The cubic root of 1115542455 is about 1037.1192637900.

Adding to 1115542455 its reverse (5542455111), we get a palindrome (6657997566).

The spelling of 1115542455 in words is "one billion, one hundred fifteen million, five hundred forty-two thousand, four hundred fifty-five".