1355212500 has 144 divisors (see below), whose sum is σ = 4015992960. Its totient is φ = 355600000.

The previous prime is 1355212457. The next prime is 1355212519. The reversal of 1355212500 is 52125531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2662246 + ... + 2662754.

It is an arithmetic number, because the mean of its divisors is an integer number (27888840).

Almost surely, 2^1355212500 is an apocalyptic number.

1355212500 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 1355212500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007996480).

1355212500 is an abundant number, since it is smaller than the sum of its proper divisors (2660780460).

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

1355212500 is an equidigital number, since it uses as much as digits as its factorization.

1355212500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1355212500 is about 36813.2109438989. The cubic root of 1355212500 is about 1106.6300682644.

The spelling of 1355212500 in words is "one billion, three hundred fifty-five million, two hundred twelve thousand, five hundred".