641522153 has 4 divisors (see below), whose sum is σ = 662216448. Its totient is φ = 620827860.

The previous prime is 641522111. The next prime is 641522159. The reversal of 641522153 is 351225146.

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 a cyclic number.

It is not a de Polignac number, because 641522153 - 2⁸ = 641521897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641522159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10347101 + ... + 10347162.

It is an arithmetic number, because the mean of its divisors is an integer number (165554112).

Almost surely, 2^641522153 is an apocalyptic number.

It is an amenable number.

641522153 is a deficient number, since it is larger than the sum of its proper divisors (20694295).

641522153 is a wasteful number, since it uses less digits than its factorization.

641522153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20694294.

The product of its digits is 7200, while the sum is 29.

The square root of 641522153 is about 25328.2876049685. The cubic root of 641522153 is about 862.4565390969.

Adding to 641522153 its reverse (351225146), we get a palindrome (992747299).

The spelling of 641522153 in words is "six hundred forty-one million, five hundred twenty-two thousand, one hundred fifty-three".