1153455421 has 8 divisors (see below), whose sum is σ = 1181767104. Its totient is φ = 1125479040.

The previous prime is 1153455361. The next prime is 1153455431. The reversal of 1153455421 is 1245543511.

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 1153455421 - 2¹¹ = 1153453373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153455431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76855 + ... + 90628.

It is an arithmetic number, because the mean of its divisors is an integer number (147720888).

Almost surely, 2^1153455421 is an apocalyptic number.

It is an amenable number.

1153455421 is a deficient number, since it is larger than the sum of its proper divisors (28311683).

1153455421 is an equidigital number, since it uses as much as digits as its factorization.

1153455421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167651.

The product of its digits is 12000, while the sum is 31.

The square root of 1153455421 is about 33962.5591055798. The cubic root of 1153455421 is about 1048.7378397302.

Adding to 1153455421 its reverse (1245543511), we get a palindrome (2398998932).

The spelling of 1153455421 in words is "one billion, one hundred fifty-three million, four hundred fifty-five thousand, four hundred twenty-one".