6201551 has 2 divisors, whose sum is σ = 6201552. Its totient is φ = 6201550.

The previous prime is 6201539. The next prime is 6201571. The reversal of 6201551 is 1551026.

It is an a-pointer prime, because the next prime (6201571) can be obtained adding 6201551 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6201551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6201521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100775 + 3100776.

It is an arithmetic number, because the mean of its divisors is an integer number (3100776).

Almost surely, 2^6201551 is an apocalyptic number.

6201551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6201551 is an equidigital number, since it uses as much as digits as its factorization.

6201551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 6201551 is about 2490.2913484169. The cubic root of 6201551 is about 183.7243726889.

Adding to 6201551 its reverse (1551026), we get a palindrome (7752577).

The spelling of 6201551 in words is "six million, two hundred one thousand, five hundred fifty-one".