1145355552 has 360 divisors, whose sum is σ = 3931638480. Its totient is φ = 324311040.

The previous prime is 1145355527. The next prime is 1145355583. The reversal of 1145355552 is 2555535411.

1145355552 is a `hidden beast` number, since 1 + 1 + 4 + 53 + 55 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 8239899 + ... + 8240037.

It is an arithmetic number, because the mean of its divisors is an integer number (10921218).

Almost surely, 2^1145355552 is an apocalyptic number.

1145355552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1145355552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965819240).

1145355552 is an abundant number, since it is smaller than the sum of its proper divisors (2786282928).

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

1145355552 is a wasteful number, since it uses less digits than its factorization.

1145355552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 172 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 1145355552 is about 33843.1019854859. The cubic root of 1145355552 is about 1046.2772328827.

The spelling of 1145355552 in words is "one billion, one hundred forty-five million, three hundred fifty-five thousand, five hundred fifty-two".