1152220541 has 4 divisors (see below), whose sum is σ = 1152293472. Its totient is φ = 1152147612.

The previous prime is 1152220483. The next prime is 1152220567. The reversal of 1152220541 is 1450222511.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1450222511 = 37 ⋅39195203.

It is a cyclic number.

It is not a de Polignac number, because 1152220541 - 2¹⁸ = 1151958397 is a prime.

It is a super-2 number, since 2×1152220541² = 2655224350204665362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152220241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751 + ... + 48036.

It is an arithmetic number, because the mean of its divisors is an integer number (288073368).

Almost surely, 2^1152220541 is an apocalyptic number.

It is an amenable number.

1152220541 is a deficient number, since it is larger than the sum of its proper divisors (72931).

1152220541 is an equidigital number, since it uses as much as digits as its factorization.

1152220541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72930.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1152220541 is about 33944.3742172396. The cubic root of 1152220541 is about 1048.3634493558.

The spelling of 1152220541 in words is "one billion, one hundred fifty-two million, two hundred twenty thousand, five hundred forty-one".