1153452521 has 8 divisors (see below), whose sum is σ = 1268609664. Its totient is φ = 1042071120.

The previous prime is 1153452493. The next prime is 1153452527. The reversal of 1153452521 is 1252543511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1153452521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1153452527) 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, 943295 + ... + 944516.

It is an arithmetic number, because the mean of its divisors is an integer number (158576208).

Almost surely, 2^1153452521 is an apocalyptic number.

It is an amenable number.

1153452521 is a deficient number, since it is larger than the sum of its proper divisors (115157143).

1153452521 is a wasteful number, since it uses less digits than its factorization.

1153452521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887871.

The product of its digits is 6000, while the sum is 29.

The square root of 1153452521 is about 33962.5164114793. The cubic root of 1153452521 is about 1048.7369608226.

The spelling of 1153452521 in words is "one billion, one hundred fifty-three million, four hundred fifty-two thousand, five hundred twenty-one".