1217505152 has 32 divisors (see below), whose sum is σ = 2435968080. Its totient is φ = 606125056.

The previous prime is 1217505151. The next prime is 1217505187. The reversal of 1217505152 is 2515057121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217505151) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9413 + ... + 50235.

Almost surely, 2^1217505152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217505152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217984040).

1217505152 is an abundant number, since it is smaller than the sum of its proper divisors (1218462928).

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

1217505152 is an equidigital number, since it uses as much as digits as its factorization.

1217505152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41070 (or 41058 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 1217505152 is about 34892.7664710037. The cubic root of 1217505152 is about 1067.8008671735.

The spelling of 1217505152 in words is "one billion, two hundred seventeen million, five hundred five thousand, one hundred fifty-two".