220513550 has 24 divisors (see below), whose sum is σ = 412015296. Its totient is φ = 87805440.

The previous prime is 220513547. The next prime is 220513583. The reversal of 220513550 is 55315022.

220513550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1262 + ... + 21038.

It is an arithmetic number, because the mean of its divisors is an integer number (17167304).

Almost surely, 2^220513550 is an apocalyptic number.

220513550 is a deficient number, since it is larger than the sum of its proper divisors (191501746).

220513550 is a wasteful number, since it uses less digits than its factorization.

220513550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012 (or 20007 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 220513550 is about 14849.6986501410. The cubic root of 220513550 is about 604.1504365570.

Adding to 220513550 its reverse (55315022), we get a palindrome (275828572).

The spelling of 220513550 in words is "two hundred twenty million, five hundred thirteen thousand, five hundred fifty".