1150543553 has 4 divisors (see below), whose sum is σ = 1151090688. Its totient is φ = 1149996420.

The previous prime is 1150543549. The next prime is 1150543573. The reversal of 1150543553 is 3553450511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1150543553 - 2² = 1150543549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150543523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270401 + ... + 274622.

It is an arithmetic number, because the mean of its divisors is an integer number (287772672).

Almost surely, 2^1150543553 is an apocalyptic number.

It is an amenable number.

1150543553 is a deficient number, since it is larger than the sum of its proper divisors (547135).

1150543553 is an equidigital number, since it uses as much as digits as its factorization.

1150543553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547134.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 1150543553 is about 33919.6632206159. The cubic root of 1150543553 is about 1047.8545923315.

The spelling of 1150543553 in words is "one billion, one hundred fifty million, five hundred forty-three thousand, five hundred fifty-three".