2540201 has 2 divisors, whose sum is σ = 2540202. Its totient is φ = 2540200.

The previous prime is 2540183. The next prime is 2540203. The reversal of 2540201 is 1020452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 912025 = 1276^2 + 955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540201 is a prime.

It is a super-2 number, since 2×2540201² = 12905242240802, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2540203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2540203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270100 + 1270101.

It is an arithmetic number, because the mean of its divisors is an integer number (1270101).

2^2540201 is an apocalyptic number.

It is an amenable number.

2540201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540201 is an equidigital number, since it uses as much as digits as its factorization.

2540201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2540201 is about 1593.8008031119. The cubic root of 2540201 is about 136.4444979129. Note that the first 4 decimals are identical.

Adding to 2540201 its reverse (1020452), we get a palindrome (3560653).

The spelling of 2540201 in words is "two million, five hundred forty thousand, two hundred one".