220134555 has 12 divisors (see below), whose sum is σ = 381566640. Its totient is φ = 117405072.

The previous prime is 220134517. The next prime is 220134559. The reversal of 220134555 is 555431022.

It is a happy number.

220134555 is a `hidden beast` number, since 2 + 201 + 3 + 455 + 5 = 666.

It is not a de Polignac number, because 220134555 - 2⁶ = 220134491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220134559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2445895 + ... + 2445984.

It is an arithmetic number, because the mean of its divisors is an integer number (31797220).

Almost surely, 2^220134555 is an apocalyptic number.

220134555 is a deficient number, since it is larger than the sum of its proper divisors (161432085).

220134555 is a wasteful number, since it uses less digits than its factorization.

220134555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891890 (or 4891887 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 220134555 is about 14836.9321289814. The cubic root of 220134555 is about 603.8041217894.

Adding to 220134555 its reverse (555431022), we get a palindrome (775565577).

The spelling of 220134555 in words is "two hundred twenty million, one hundred thirty-four thousand, five hundred fifty-five".