1153500421 has 8 divisors (see below), whose sum is σ = 1191967488. Its totient is φ = 1115112000.

The previous prime is 1153500377. The next prime is 1153500443. The reversal of 1153500421 is 1240053511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1153500421 - 2¹¹ = 1153498373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153500392 and 1153500401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153530421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10941 + ... + 49261.

It is an arithmetic number, because the mean of its divisors is an integer number (148995936).

Almost surely, 2^1153500421 is an apocalyptic number.

It is an amenable number.

1153500421 is a deficient number, since it is larger than the sum of its proper divisors (38467067).

1153500421 is an equidigital number, since it uses as much as digits as its factorization.

1153500421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39323.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1153500421 is about 33963.2215933648. The cubic root of 1153500421 is about 1048.7514777632.

Adding to 1153500421 its reverse (1240053511), we get a palindrome (2393553932).

The spelling of 1153500421 in words is "one billion, one hundred fifty-three million, five hundred thousand, four hundred twenty-one".