65541133 has 4 divisors (see below), whose sum is σ = 74904160. Its totient is φ = 56178108.

The previous prime is 65541107. The next prime is 65541139. The reversal of 65541133 is 33114556.

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 not a de Polignac number, because 65541133 - 2⁹ = 65540621 is a prime.

It is a super-2 number, since 2×65541133² = 8591280229847378, 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 (65541139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4681503 + ... + 4681516.

It is an arithmetic number, because the mean of its divisors is an integer number (18726040).

Almost surely, 2^65541133 is an apocalyptic number.

It is an amenable number.

65541133 is a deficient number, since it is larger than the sum of its proper divisors (9363027).

65541133 is an equidigital number, since it uses as much as digits as its factorization.

65541133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9363026.

The product of its digits is 5400, while the sum is 28.

The square root of 65541133 is about 8095.7478345116. The cubic root of 65541133 is about 403.1852616921.

Adding to 65541133 its reverse (33114556), we get a palindrome (98655689).

The spelling of 65541133 in words is "sixty-five million, five hundred forty-one thousand, one hundred thirty-three".