1153053021 has 16 divisors (see below), whose sum is σ = 1624262400. Its totient is φ = 726401088.

The previous prime is 1153052983. The next prime is 1153053047. The reversal of 1153053021 is 1203503511.

It is not a de Polignac number, because 1153053021 - 2¹⁰ = 1153051997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153053061) 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, 136906 + ... + 145083.

It is an arithmetic number, because the mean of its divisors is an integer number (101516400).

Almost surely, 2^1153053021 is an apocalyptic number.

It is an amenable number.

1153053021 is a deficient number, since it is larger than the sum of its proper divisors (471209379).

1153053021 is a wasteful number, since it uses less digits than its factorization.

1153053021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282068.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1153053021 is about 33956.6344180338. The cubic root of 1153053021 is about 1048.6158696383.

Adding to 1153053021 its reverse (1203503511), we get a palindrome (2356556532).

The spelling of 1153053021 in words is "one billion, one hundred fifty-three million, fifty-three thousand, twenty-one".