1555428850 has 24 divisors (see below), whose sum is σ = 2896689600. Its totient is φ = 621399120.

The previous prime is 1555428839. The next prime is 1555428989. The reversal of 1555428850 is 588245551.

It is a junction number, because it is equal to n+sod(n) for n = 1555428797 and 1555428806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22251 + ... + 60049.

It is an arithmetic number, because the mean of its divisors is an integer number (120695400).

Almost surely, 2^1555428850 is an apocalyptic number.

1555428850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1555428850 is a deficient number, since it is larger than the sum of its proper divisors (1341260750).

1555428850 is a wasteful number, since it uses less digits than its factorization.

1555428850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38634 (or 38629 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 43.

The square root of 1555428850 is about 39438.9255685294. The cubic root of 1555428850 is about 1158.6440880208.

The spelling of 1555428850 in words is "one billion, five hundred fifty-five million, four hundred twenty-eight thousand, eight hundred fifty".