1540211 has 2 divisors, whose sum is σ = 1540212. Its totient is φ = 1540210.

The previous prime is 1540207. The next prime is 1540223. The reversal of 1540211 is 1120451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1540211 - 2² = 1540207 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1540711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770105 + 770106.

It is an arithmetic number, because the mean of its divisors is an integer number (770106).

2^1540211 is an apocalyptic number.

1540211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540211 is an equidigital number, since it uses as much as digits as its factorization.

1540211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1540211 is about 1241.0523760100. The cubic root of 1540211 is about 115.4853088765.

Adding to 1540211 its reverse (1120451), we get a palindrome (2660662).

The spelling of 1540211 in words is "one million, five hundred forty thousand, two hundred eleven".