1011328550 has 48 divisors (see below), whose sum is σ = 1932813792. Its totient is φ = 393465600.

The previous prime is 1011328477. The next prime is 1011328573. The reversal of 1011328550 is 558231101.

It is a happy number.

1011328550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997844 + ... + 998856.

It is an arithmetic number, because the mean of its divisors is an integer number (40266954).

Almost surely, 2^1011328550 is an apocalyptic number.

1011328550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011328550 is a deficient number, since it is larger than the sum of its proper divisors (921485242).

1011328550 is a wasteful number, since it uses less digits than its factorization.

1011328550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1011328550 is about 31801.3922651195. The cubic root of 1011328550 is about 1003.7620128451.

Adding to 1011328550 its reverse (558231101), we get a palindrome (1569559651).

The spelling of 1011328550 in words is "one billion, eleven million, three hundred twenty-eight thousand, five hundred fifty".