1550220516 has 144 divisors (see below), whose sum is σ = 4479995520. Its totient is φ = 448335360.

The previous prime is 1550220443. The next prime is 1550220523. The reversal of 1550220516 is 6150220551.

It is a self number, because there is not a number n which added to its sum of digits gives 1550220516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 633856 + ... + 636296.

It is an arithmetic number, because the mean of its divisors is an integer number (31111080).

Almost surely, 2^1550220516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550220516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239997760).

1550220516 is an abundant number, since it is smaller than the sum of its proper divisors (2929775004).

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

1550220516 is a wasteful number, since it uses less digits than its factorization.

1550220516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1550220516 is about 39372.8398264591. The cubic root of 1550220516 is about 1157.3494068024.

The spelling of 1550220516 in words is "one billion, five hundred fifty million, two hundred twenty thousand, five hundred sixteen".