1145711550 has 24 divisors (see below), whose sum is σ = 2841365016. Its totient is φ = 305523040.

The previous prime is 1145711543. The next prime is 1145711563. The reversal of 1145711550 is 551175411.

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, 3818889 + ... + 3819188.

It is an arithmetic number, because the mean of its divisors is an integer number (118390209).

Almost surely, 2^1145711550 is an apocalyptic number.

1145711550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145711550 is an abundant number, since it is smaller than the sum of its proper divisors (1695653466).

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

1145711550 is a wasteful number, since it uses less digits than its factorization.

1145711550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638092 (or 7638087 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 30.

The square root of 1145711550 is about 33848.3611124675. The cubic root of 1145711550 is about 1046.3856225200.

Adding to 1145711550 its reverse (551175411), we get a palindrome (1696886961).

The spelling of 1145711550 in words is "one billion, one hundred forty-five million, seven hundred eleven thousand, five hundred fifty".