641153041 has 3 divisors (see below), whose sum is σ = 641178363. Its totient is φ = 641127720.

The previous prime is 641153033. The next prime is 641153069. The reversal of 641153041 is 140351146.

The square root of 641153041 is 25321.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 516607441 + 124545600 = 22729^2 + 11160^2 .

It is not a de Polignac number, because 641153041 - 2³ = 641153033 is a prime.

It is a super-2 number, since 2×641153041² = 822154443967095362, 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 = 641152997 and 641153015.

It is not an unprimeable number, because it can be changed into a prime (641153021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12661 + ... + 37981.

It is an arithmetic number, because the mean of its divisors is an integer number (213726121).

Almost surely, 2^641153041 is an apocalyptic number.

641153041 is the 25321-st square number.

641153041 is the 12661-st centered octagonal number.

It is an amenable number.

641153041 is a deficient number, since it is larger than the sum of its proper divisors (25322).

641153041 is an frugal number, since it uses more digits than its factorization.

641153041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50642 (or 25321 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The cubic root of 641153041 is about 862.2910970926.

Multiplying 641153041 by its sum of digits (25), we get a square (16028826025 = 126605²).

The spelling of 641153041 in words is "six hundred forty-one million, one hundred fifty-three thousand, forty-one".