2250001 has 8 divisors (see below), whose sum is σ = 2565864. Its totient is φ = 1954560.

The previous prime is 2249987. The next prime is 2250013. The reversal of 2250001 is 1000522.

It is a Cunningham number, because it is equal to 1500²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 331776 + 1918225 = 576^2 + 1385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2250001 - 2⁵ = 2249969 is a prime.

It is a Duffinian number.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2250001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2250041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4870 + ... + 5311.

It is an arithmetic number, because the mean of its divisors is an integer number (320733).

2^2250001 is an apocalyptic number.

It is an amenable number.

2250001 is a deficient number, since it is larger than the sum of its proper divisors (315863).

2250001 is a wasteful number, since it uses less digits than its factorization.

2250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 2250001 is about 1500.0003333333. Note that the first 3 decimals coincide. The cubic root of 2250001 is about 131.0370891233.

Adding to 2250001 its reverse (1000522), we get a palindrome (3250523).

The spelling of 2250001 in words is "two million, two hundred fifty thousand, one".