2133512550 has 144 divisors (see below), whose sum is σ = 6201821808. Its totient is φ = 522720000.

The previous prime is 2133512533. The next prime is 2133512551. The reversal of 2133512550 is 552153312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133512551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1467624 + ... + 1469076.

It is an arithmetic number, because the mean of its divisors is an integer number (43068207).

Almost surely, 2^2133512550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2133512550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3100910904).

2133512550 is an abundant number, since it is smaller than the sum of its proper divisors (4068309258).

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

2133512550 is a wasteful number, since it uses less digits than its factorization.

2133512550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 2133512550 is about 46189.9615717528. The cubic root of 2133512550 is about 1287.3552267542.

Adding to 2133512550 its reverse (552153312), we get a palindrome (2685665862).

The spelling of 2133512550 in words is "two billion, one hundred thirty-three million, five hundred twelve thousand, five hundred fifty".