1121513055 has 16 divisors (see below), whose sum is σ = 1932453600. Its totient is φ = 552129408.

The previous prime is 1121513053. The next prime is 1121513077. The reversal of 1121513055 is 5503151211.

It is not a de Polignac number, because 1121513055 - 2¹ = 1121513053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121513053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2875480 + ... + 2875869.

It is an arithmetic number, because the mean of its divisors is an integer number (120778350).

Almost surely, 2^1121513055 is an apocalyptic number.

1121513055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1121513055 is a deficient number, since it is larger than the sum of its proper divisors (810940545).

1121513055 is a wasteful number, since it uses less digits than its factorization.

1121513055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751370.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1121513055 is about 33488.9990146018. Note that the first 3 decimals coincide. The cubic root of 1121513055 is about 1038.9662604840.

Adding to 1121513055 its reverse (5503151211), we get a palindrome (6624664266).

The spelling of 1121513055 in words is "one billion, one hundred twenty-one million, five hundred thirteen thousand, fifty-five".