1111545550 has 12 divisors (see below), whose sum is σ = 2067474816. Its totient is φ = 444618200.

The previous prime is 1111545509. The next prime is 1111545551. The reversal of 1111545550 is 555451111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111545551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11115406 + ... + 11115505.

It is an arithmetic number, because the mean of its divisors is an integer number (172289568).

Almost surely, 2^1111545550 is an apocalyptic number.

1111545550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111545550 is a deficient number, since it is larger than the sum of its proper divisors (955929266).

1111545550 is a wasteful number, since it uses less digits than its factorization.

1111545550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230923 (or 22230918 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 28.

The square root of 1111545550 is about 33339.8492798033. The cubic root of 1111545550 is about 1035.8791413253.

Adding to 1111545550 its reverse (555451111), we get a palindrome (1666996661).

It can be divided in two parts, 11115 and 45550, that added together give a palindrome (56665).

The spelling of 1111545550 in words is "one billion, one hundred eleven million, five hundred forty-five thousand, five hundred fifty".