1152053721 has 48 divisors (see below), whose sum is σ = 2095789696. Its totient is φ = 593526528.

The previous prime is 1152053717. The next prime is 1152053723. The reversal of 1152053721 is 1273502511.

It is not a de Polignac number, because 1152053721 - 2² = 1152053717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1152053723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18861 + ... + 51573.

Almost surely, 2^1152053721 is an apocalyptic number.

It is an amenable number.

1152053721 is a deficient number, since it is larger than the sum of its proper divisors (943735975).

1152053721 is a wasteful number, since it uses less digits than its factorization.

1152053721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32782 (or 32779 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1152053721 is about 33941.9168727990. The cubic root of 1152053721 is about 1048.3128524359.

The spelling of 1152053721 in words is "one billion, one hundred fifty-two million, fifty-three thousand, seven hundred twenty-one".