1153221573 has 16 divisors (see below), whose sum is σ = 1759024256. Its totient is φ = 658333440.

The previous prime is 1153221551. The next prime is 1153221581. The reversal of 1153221573 is 3751223511.

It is not a de Polignac number, because 1153221573 - 2⁸ = 1153221317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153221573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153221523) 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, 4888 + ... + 48273.

It is an arithmetic number, because the mean of its divisors is an integer number (109939016).

Almost surely, 2^1153221573 is an apocalyptic number.

It is an amenable number.

1153221573 is a deficient number, since it is larger than the sum of its proper divisors (605802683).

1153221573 is a wasteful number, since it uses less digits than its factorization.

1153221573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54204.

The product of its digits is 6300, while the sum is 30.

The square root of 1153221573 is about 33959.1161987470. The cubic root of 1153221573 is about 1048.6669623135. Note that the first 3 decimals are identical.

The spelling of 1153221573 in words is "one billion, one hundred fifty-three million, two hundred twenty-one thousand, five hundred seventy-three".