2150001 has 12 divisors (see below), whose sum is σ = 3549312. Its totient is φ = 1228536.

The previous prime is 2149993. The next prime is 2150009. The reversal of 2150001 is 1000512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2149993) and next prime (2150009).

It is not a de Polignac number, because 2150001 - 2³ = 2149993 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2150009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17001 + ... + 17126.

It is an arithmetic number, because the mean of its divisors is an integer number (295776).

2^2150001 is an apocalyptic number.

2150001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2150001 is a deficient number, since it is larger than the sum of its proper divisors (1399311).

2150001 is a wasteful number, since it uses less digits than its factorization.

2150001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34140 (or 34137 counting only the distinct ones).

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

The square root of 2150001 is about 1466.2881708586. The cubic root of 2150001 is about 129.0663080777.

Adding to 2150001 its reverse (1000512), we get a palindrome (3150513).

The spelling of 2150001 in words is "two million, one hundred fifty thousand, one".