1520055552 has 72 divisors (see below), whose sum is σ = 4075376256. Its totient is φ = 502951936.

The previous prime is 1520055539. The next prime is 1520055553. The reversal of 1520055552 is 2555500251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520055553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97993 + ... + 112439.

It is an arithmetic number, because the mean of its divisors is an integer number (56602448).

Almost surely, 2^1520055552 is an apocalyptic number.

1520055552 is a gapful number since it is divisible by the number (12) 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 1520055552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2037688128).

1520055552 is an abundant number, since it is smaller than the sum of its proper divisors (2555320704).

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

1520055552 is a wasteful number, since it uses less digits than its factorization.

1520055552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603 (or 14589 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 1520055552 is about 38987.8898120942. The cubic root of 1520055552 is about 1149.7934227556.

The spelling of 1520055552 in words is "one billion, five hundred twenty million, fifty-five thousand, five hundred fifty-two".