1555385448 has 32 divisors (see below), whose sum is σ = 4093120800. Its totient is φ = 491174208.

The previous prime is 1555385443. The next prime is 1555385459. The reversal of 1555385448 is 8445835551.

It is a junction number, because it is equal to n+sod(n) for n = 1555385397 and 1555385406.

It is not an unprimeable number, because it can be changed into a prime (1555385443) 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, 1705011 + ... + 1705922.

It is an arithmetic number, because the mean of its divisors is an integer number (127910025).

Almost surely, 2^1555385448 is an apocalyptic number.

It is an amenable number.

1555385448 is an abundant number, since it is smaller than the sum of its proper divisors (2537735352).

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

1555385448 is a wasteful number, since it uses less digits than its factorization.

1555385448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410961 (or 3410957 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 48.

The square root of 1555385448 is about 39438.3753215063. The cubic root of 1555385448 is about 1158.6333111561.

The spelling of 1555385448 in words is "one billion, five hundred fifty-five million, three hundred eighty-five thousand, four hundred forty-eight".