1550200020 has 48 divisors (see below), whose sum is σ = 4347907200. Its totient is φ = 412686976.

The previous prime is 1550200019. The next prime is 1550200031. The reversal of 1550200020 is 200020551.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14374 + ... + 57506.

It is an arithmetic number, because the mean of its divisors is an integer number (90581400).

Almost surely, 2^1550200020 is an apocalyptic number.

1550200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550200020 is an abundant number, since it is smaller than the sum of its proper divisors (2797707180).

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

1550200020 is a wasteful number, since it uses less digits than its factorization.

1550200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43744 (or 43742 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1550200020 is about 39372.5795446526. The cubic root of 1550200020 is about 1157.3443062081.

Adding to 1550200020 its reverse (200020551), we get a palindrome (1750220571).

The spelling of 1550200020 in words is "one billion, five hundred fifty million, two hundred thousand, twenty".