641153 has 4 divisors (see below), whose sum is σ = 652080. Its totient is φ = 630228.

The previous prime is 641143. The next prime is 641167. The reversal of 641153 is 351146.

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: 351146 = 2 ⋅175573.

It is a cyclic number.

It is not a de Polignac number, because 641153 - 2⁶ = 641089 is a prime.

It is a super-2 number, since 2×641153² = 822154338818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5375 + ... + 5492.

It is an arithmetic number, because the mean of its divisors is an integer number (163020).

2⁶⁴¹¹⁵³ is an apocalyptic number.

It is an amenable number.

641153 is a deficient number, since it is larger than the sum of its proper divisors (10927).

641153 is a wasteful number, since it uses less digits than its factorization.

641153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10926.

The product of its digits is 360, while the sum is 20.

The square root of 641153 is about 800.7203007293. The cubic root of 641153 is about 86.2291078712.

Adding to 641153 its reverse (351146), we get a palindrome (992299).

The spelling of 641153 in words is "six hundred forty-one thousand, one hundred fifty-three".