1540545211 has 2 divisors, whose sum is σ = 1540545212. Its totient is φ = 1540545210.

The previous prime is 1540545191. The next prime is 1540545239. The reversal of 1540545211 is 1125450451.

It is an a-pointer prime, because the next prime (1540545239) can be obtained adding 1540545211 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540545211 is a prime.

It is a super-3 number, since 3×1540545211³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1540545211.

It is not a weakly prime, because it can be changed into another prime (1540545241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770272605 + 770272606.

It is an arithmetic number, because the mean of its divisors is an integer number (770272606).

Almost surely, 2^1540545211 is an apocalyptic number.

1540545211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540545211 is an equidigital number, since it uses as much as digits as its factorization.

1540545211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1540545211 is about 39249.7797573439. The cubic root of 1540545211 is about 1154.9366134014.

Adding to 1540545211 its reverse (1125450451), we get a palindrome (2665995662).

The spelling of 1540545211 in words is "one billion, five hundred forty million, five hundred forty-five thousand, two hundred eleven".