641501052 has 24 divisors (see below), whose sum is σ = 1584885456. Its totient is φ = 201255168.

The previous prime is 641501039. The next prime is 641501087. The reversal of 641501052 is 250105146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572103 + ... + 1572510.

It is an arithmetic number, because the mean of its divisors is an integer number (66036894).

Almost surely, 2^641501052 is an apocalyptic number.

It is an amenable number.

641501052 is an abundant number, since it is smaller than the sum of its proper divisors (943384404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641501052 is a wasteful number, since it uses less digits than its factorization.

641501052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144637 (or 3144635 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 641501052 is about 25327.8710514721. The cubic root of 641501052 is about 862.4470829958.

Adding to 641501052 its reverse (250105146), we get a palindrome (891606198).

The spelling of 641501052 in words is "six hundred forty-one million, five hundred one thousand, fifty-two".