1550214220 has 12 divisors (see below), whose sum is σ = 3255449904. Its totient is φ = 620085680.

The previous prime is 1550214217. The next prime is 1550214221. The reversal of 1550214220 is 224120551.

It is a junction number, because it is equal to n+sod(n) for n = 1550214191 and 1550214200.

It is not an unprimeable number, because it can be changed into a prime (1550214221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38755336 + ... + 38755375.

It is an arithmetic number, because the mean of its divisors is an integer number (271287492).

Almost surely, 2^1550214220 is an apocalyptic number.

1550214220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550214220 is an abundant number, since it is smaller than the sum of its proper divisors (1705235684).

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

1550214220 is a wasteful number, since it uses less digits than its factorization.

1550214220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77510720 (or 77510718 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1550214220 is about 39372.7598727851. The cubic root of 1550214220 is about 1157.3478399970.

Adding to 1550214220 its reverse (224120551), we get a palindrome (1774334771).

The spelling of 1550214220 in words is "one billion, five hundred fifty million, two hundred fourteen thousand, two hundred twenty".