1151512400 has 60 divisors (see below), whose sum is σ = 2786834652. Its totient is φ = 457221120.

The previous prime is 1151512399. The next prime is 1151512441. The reversal of 1151512400 is 42151511.

It can be written as a sum of positive squares in 6 ways, for example, as 251032336 + 900480064 = 15844^2 + 30008^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44294 + ... + 65306.

Almost surely, 2^1151512400 is an apocalyptic number.

1151512400 is a gapful number since it is divisible by the number (10) 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 1151512400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393417326).

1151512400 is an abundant number, since it is smaller than the sum of its proper divisors (1635322252).

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

1151512400 is a wasteful number, since it uses less digits than its factorization.

1151512400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21168 (or 21157 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1151512400 is about 33933.9417103289. The cubic root of 1151512400 is about 1048.1486347856.

Adding to 1151512400 its reverse (42151511), we get a palindrome (1193663911).

The spelling of 1151512400 in words is "one billion, one hundred fifty-one million, five hundred twelve thousand, four hundred".