1533213500 has 192 divisors, whose sum is σ = 4258136064. Its totient is φ = 469152000.

The previous prime is 1533213481. The next prime is 1533213523. The reversal of 1533213500 is 53123351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1409957 + ... + 1411043.

It is an arithmetic number, because the mean of its divisors is an integer number (22177792).

Almost surely, 2^1533213500 is an apocalyptic number.

1533213500 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 1533213500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2129068032).

1533213500 is an abundant number, since it is smaller than the sum of its proper divisors (2724922564).

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

1533213500 is a wasteful number, since it uses less digits than its factorization.

1533213500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 1533213500 is about 39156.2702513914. The cubic root of 1533213500 is about 1153.1015206379.

Adding to 1533213500 its reverse (53123351), we get a palindrome (1586336851).

The spelling of 1533213500 in words is "one billion, five hundred thirty-three million, two hundred thirteen thousand, five hundred".