1200055153 has 16 divisors (see below), whose sum is σ = 1374299136. Its totient is φ = 1037241040.

The previous prime is 1200055147. The next prime is 1200055187. The reversal of 1200055153 is 3515500021.

It is not a de Polignac number, because 1200055153 - 2²¹ = 1197958001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200055123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28050 + ... + 56452.

It is an arithmetic number, because the mean of its divisors is an integer number (85893696).

Almost surely, 2^1200055153 is an apocalyptic number.

It is an amenable number.

1200055153 is a deficient number, since it is larger than the sum of its proper divisors (174243983).

1200055153 is a wasteful number, since it uses less digits than its factorization.

1200055153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1200055153 is about 34641.8122072157. The cubic root of 1200055153 is about 1062.6748491577.

Adding to 1200055153 its reverse (3515500021), we get a palindrome (4715555174).

The spelling of 1200055153 in words is "one billion, two hundred million, fifty-five thousand, one hundred fifty-three".