641241529 has 8 divisors (see below), whose sum is σ = 648945000. Its totient is φ = 633549312.

The previous prime is 641241527. The next prime is 641241553. The reversal of 641241529 is 925142146.

It can be written as a sum of positive squares in 4 ways, for example, as 4840000 + 636401529 = 2200^2 + 25227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641241529 - 2¹ = 641241527 is a prime.

It is a super-2 number, since 2×641241529² = 822381397028515682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641241494 and 641241503.

It is not an unprimeable number, because it can be changed into a prime (641241521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184197 + ... + 187645.

It is an arithmetic number, because the mean of its divisors is an integer number (81118125).

Almost surely, 2^641241529 is an apocalyptic number.

It is an amenable number.

641241529 is a deficient number, since it is larger than the sum of its proper divisors (7703471).

641241529 is a wasteful number, since it uses less digits than its factorization.

641241529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627.

The product of its digits is 17280, while the sum is 34.

The square root of 641241529 is about 25322.7472640707. The cubic root of 641241529 is about 862.3307646393.

The spelling of 641241529 in words is "six hundred forty-one million, two hundred forty-one thousand, five hundred twenty-nine".