1550020 has 24 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 587232.

The previous prime is 1549997. The next prime is 1550027. The reversal of 1550020 is 200551.

It is not an unprimeable number, because it can be changed into a prime (1550027) 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 7 ways as a sum of consecutive naturals, for example, 1660 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (142800).

2^1550020 is an apocalyptic number.

1550020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550020 is an abundant number, since it is smaller than the sum of its proper divisors (1877180).

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

1550020 is a wasteful number, since it uses less digits than its factorization.

1550020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107 (or 4105 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 1550020 is about 1244.9979919663. The cubic root of 1550020 is about 115.7299504852.

Adding to 1550020 its reverse (200551), we get a palindrome (1750571).

The spelling of 1550020 in words is "one million, five hundred fifty thousand, twenty".