1150542553 has 4 divisors (see below), whose sum is σ = 1156566528. Its totient is φ = 1144518580.

The previous prime is 1150542527. The next prime is 1150542557. The reversal of 1150542553 is 3552450511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3552450511 = 19309 ⋅183979.

It is a cyclic number.

It is not a de Polignac number, because 1150542553 - 2¹³ = 1150534361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150542557) 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, 3011701 + ... + 3012082.

It is an arithmetic number, because the mean of its divisors is an integer number (289141632).

Almost surely, 2^1150542553 is an apocalyptic number.

It is an amenable number.

1150542553 is a deficient number, since it is larger than the sum of its proper divisors (6023975).

1150542553 is an equidigital number, since it uses as much as digits as its factorization.

1150542553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023974.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1150542553 is about 33919.6484799003. The cubic root of 1150542553 is about 1047.8542887490.

The spelling of 1150542553 in words is "one billion, one hundred fifty million, five hundred forty-two thousand, five hundred fifty-three".