1115516550 has 24 divisors (see below), whose sum is σ = 2766481416. Its totient is φ = 297471040.

The previous prime is 1115516531. The next prime is 1115516569. The reversal of 1115516550 is 556155111.

It is an interprime number because it is at equal distance from previous prime (1115516531) and next prime (1115516569).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3718239 + ... + 3718538.

It is an arithmetic number, because the mean of its divisors is an integer number (115270059).

Almost surely, 2^1115516550 is an apocalyptic number.

1115516550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115516550 is an abundant number, since it is smaller than the sum of its proper divisors (1650964866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115516550 is a wasteful number, since it uses less digits than its factorization.

1115516550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436792 (or 7436787 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The square root of 1115516550 is about 33399.3495445645. The cubic root of 1115516550 is about 1037.1112357727. Note that the first 3 decimals are identical.

The spelling of 1115516550 in words is "one billion, one hundred fifteen million, five hundred sixteen thousand, five hundred fifty".