41721001 has 6 divisors (see below), whose sum is σ = 48532650. Its totient is φ = 35760816.

The previous prime is 41720999. The next prime is 41721013. The reversal of 41721001 is 10012714.

It can be written as a sum of positive squares in only one way, i.e., 29811600 + 11909401 = 5460^2 + 3451^2 .

It is not a de Polignac number, because 41721001 - 2¹ = 41720999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41721041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425676 + ... + 425773.

It is an arithmetic number, because the mean of its divisors is an integer number (8088775).

Almost surely, 2^41721001 is an apocalyptic number.

It is an amenable number.

41721001 is a deficient number, since it is larger than the sum of its proper divisors (6811649).

41721001 is an equidigital number, since it uses as much as digits as its factorization.

41721001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851463 (or 851456 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 41721001 is about 6459.1795918677. The cubic root of 41721001 is about 346.8312650106.

Adding to 41721001 its reverse (10012714), we get a palindrome (51733715).

The spelling of 41721001 in words is "forty-one million, seven hundred twenty-one thousand, one".