641253 has 4 divisors (see below), whose sum is σ = 855008. Its totient is φ = 427500.

The previous prime is 641239. The next prime is 641261. The reversal of 641253 is 352146.

It is a happy number.

641253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 641253 - 2⁹ = 640741 is a prime.

It is a super-2 number, since 2×641253² = 822410820018, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641203) 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, 106873 + ... + 106878.

It is an arithmetic number, because the mean of its divisors is an integer number (213752).

2⁶⁴¹²⁵³ is an apocalyptic number.

It is an amenable number.

641253 is a deficient number, since it is larger than the sum of its proper divisors (213755).

641253 is a wasteful number, since it uses less digits than its factorization.

641253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213754.

The product of its digits is 720, while the sum is 21.

The square root of 641253 is about 800.7827420718. The cubic root of 641253 is about 86.2335906611.

Adding to 641253 its reverse (352146), we get a palindrome (993399).

The spelling of 641253 in words is "six hundred forty-one thousand, two hundred fifty-three".