2215521052550 has 48 divisors (see below), whose sum is σ = 4581015879552. Its totient is φ = 791650195200.

The previous prime is 2215521052531. The next prime is 2215521052567. The reversal of 2215521052550 is 552501255122.

It is a self number, because there is not a number n which added to its sum of digits gives 2215521052550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54955559 + ... + 54995858.

It is an arithmetic number, because the mean of its divisors is an integer number (95437830824).

Almost surely, 2^{2215521052550} is an apocalyptic number.

2215521052550 is an abundant number, since it is smaller than the sum of its proper divisors (2365494827002).

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

2215521052550 is a wasteful number, since it uses less digits than its factorization.

2215521052550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109951473 (or 109951468 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 2215521052550 in words is "two trillion, two hundred fifteen billion, five hundred twenty-one million, fifty-two thousand, five hundred fifty".