641451 has 16 divisors (see below), whose sum is σ = 905760. Its totient is φ = 403200.

The previous prime is 641441. The next prime is 641453. The reversal of 641451 is 154146.

It is not a de Polignac number, because 641451 - 2⁵ = 641419 is a prime.

It is a super-2 number, since 2×641451² = 822918770802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641453) 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 15 ways as a sum of consecutive naturals, for example, 6301 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (56610).

2⁶⁴¹⁴⁵¹ is an apocalyptic number.

641451 is a deficient number, since it is larger than the sum of its proper divisors (264309).

641451 is a wasteful number, since it uses less digits than its factorization.

641451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 480, while the sum is 21.

The square root of 641451 is about 800.9063615679. The cubic root of 641451 is about 86.2424652103.

Adding to 641451 its reverse (154146), we get a palindrome (795597).

It can be divided in two parts, 64145 and 1, that added together give a palindrome (64146).

The spelling of 641451 in words is "six hundred forty-one thousand, four hundred fifty-one".