2650401 has 24 divisors (see below), whose sum is σ = 4280640. Its totient is φ = 1629072.

The previous prime is 2650399. The next prime is 2650409. The reversal of 2650401 is 1040562.

It is a happy number.

2650401 is a `hidden beast` number, since 265 + 0 + 401 = 666.

It is not a de Polignac number, because 2650401 - 2¹ = 2650399 is a prime.

It is an Ulam number.

It is a Curzon number.

2650401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2650409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2740 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (178360).

2^2650401 is an apocalyptic number.

It is an amenable number.

2650401 is a deficient number, since it is larger than the sum of its proper divisors (1630239).

2650401 is an equidigital number, since it uses as much as digits as its factorization.

2650401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2650401 is about 1628.0052211218. The cubic root of 2650401 is about 138.3897300731.

Adding to 2650401 its reverse (1040562), we get a palindrome (3690963).

The spelling of 2650401 in words is "two million, six hundred fifty thousand, four hundred one".