2510001 has 16 divisors (see below), whose sum is σ = 4005120. Its totient is φ = 1544400.

The previous prime is 2509993. The next prime is 2510017. The reversal of 2510001 is 1000152.

It is a happy number.

It is not a de Polignac number, because 2510001 - 2³ = 2509993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2510041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3225 + ... + 3926.

It is an arithmetic number, because the mean of its divisors is an integer number (250320).

2^2510001 is an apocalyptic number.

It is an amenable number.

2510001 is a deficient number, since it is larger than the sum of its proper divisors (1495119).

2510001 is a wasteful number, since it uses less digits than its factorization.

2510001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7173 (or 7167 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 2510001 is about 1584.2982673727. The cubic root of 2510001 is about 135.9016193054.

Adding to 2510001 its reverse (1000152), we get a palindrome (3510153).

It can be divided in two parts, 251000 and 1, that added together give a square (251001 = 501²).

The spelling of 2510001 in words is "two million, five hundred ten thousand, one".