10401001 has 4 divisors (see below), whose sum is σ = 11201092. Its totient is φ = 9600912.

The previous prime is 10400993. The next prime is 10401011. The reversal of 10401001 is 10010401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 3515625 = 2624^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 10401001 - 2³ = 10400993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10401011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400026 + ... + 400051.

It is an arithmetic number, because the mean of its divisors is an integer number (2800273).

Almost surely, 2^10401001 is an apocalyptic number.

It is an amenable number.

10401001 is a deficient number, since it is larger than the sum of its proper divisors (800091).

10401001 is an equidigital number, since it uses as much as digits as its factorization.

10401001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800090.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 10401001 is about 3225.0582940468. The cubic root of 10401001 is about 218.2855794919.

Adding to 10401001 its reverse (10010401), we get a palindrome (20411402).

The spelling of 10401001 in words is "ten million, four hundred one thousand, one".