1155120050 has 24 divisors (see below), whose sum is σ = 2455455936. Its totient is φ = 396041040.

The previous prime is 1155120023. The next prime is 1155120077. The reversal of 1155120050 is 500215511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1155120023) and next prime (1155120077).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1649822 + ... + 1650521.

It is an arithmetic number, because the mean of its divisors is an integer number (102310664).

Almost surely, 2^1155120050 is an apocalyptic number.

1155120050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155120050 is an abundant number, since it is smaller than the sum of its proper divisors (1300335886).

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

1155120050 is a wasteful number, since it uses less digits than its factorization.

1155120050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300362 (or 3300357 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 1155120050 is about 33987.0570953120. The cubic root of 1155120050 is about 1049.2420985728.

Adding to 1155120050 its reverse (500215511), we get a palindrome (1655335561).

The spelling of 1155120050 in words is "one billion, one hundred fifty-five million, one hundred twenty thousand, fifty".