220142550 has 48 divisors (see below), whose sum is σ = 574695360. Its totient is φ = 55614240.

The previous prime is 220142543. The next prime is 220142551. The reversal of 220142550 is 55241022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220142551) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 35772 + ... + 41471.

It is an arithmetic number, because the mean of its divisors is an integer number (11972820).

Almost surely, 2^220142550 is an apocalyptic number.

220142550 is an abundant number, since it is smaller than the sum of its proper divisors (354552810).

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

220142550 is a wasteful number, since it uses less digits than its factorization.

220142550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77277 (or 77272 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 220142550 is about 14837.2015555495. The cubic root of 220142550 is about 603.8114314937.

Adding to 220142550 its reverse (55241022), we get a palindrome (275383572).

The spelling of 220142550 in words is "two hundred twenty million, one hundred forty-two thousand, five hundred fifty".