1145306550 has 24 divisors (see below), whose sum is σ = 2840360616. Its totient is φ = 305415040.

The previous prime is 1145306531. The next prime is 1145306573. The reversal of 1145306550 is 556035411.

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 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, 3817539 + ... + 3817838.

It is an arithmetic number, because the mean of its divisors is an integer number (118348359).

Almost surely, 2^1145306550 is an apocalyptic number.

1145306550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145306550 is an abundant number, since it is smaller than the sum of its proper divisors (1695054066).

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

1145306550 is a wasteful number, since it uses less digits than its factorization.

1145306550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635392 (or 7635387 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1145306550 is about 33842.3780192823. The cubic root of 1145306550 is about 1046.2623116331.

The spelling of 1145306550 in words is "one billion, one hundred forty-five million, three hundred six thousand, five hundred fifty".