4251211541 has 2 divisors, whose sum is σ = 4251211542. Its totient is φ = 4251211540.

The previous prime is 4251211513. The next prime is 4251211561. The reversal of 4251211541 is 1451121524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4241786641 + 9424900 = 65129^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 4251211541 - 2¹⁰ = 4251210517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4251211541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4251211561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125605770 + 2125605771.

It is an arithmetic number, because the mean of its divisors is an integer number (2125605771).

Almost surely, 2^4251211541 is an apocalyptic number.

It is an amenable number.

4251211541 is a deficient number, since it is larger than the sum of its proper divisors (1).

4251211541 is an equidigital number, since it uses as much as digits as its factorization.

4251211541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 4251211541 is about 65201.3154851955. The cubic root of 4251211541 is about 1619.9598045455.

The spelling of 4251211541 in words is "four billion, two hundred fifty-one million, two hundred eleven thousand, five hundred forty-one".