51563201 has 2 divisors, whose sum is σ = 51563202. Its totient is φ = 51563200.

The previous prime is 51563191. The next prime is 51563249. The reversal of 51563201 is 10236515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 2563201 = 7000^2 + 1601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51563201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51563801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25781600 + 25781601.

It is an arithmetic number, because the mean of its divisors is an integer number (25781601).

Almost surely, 2^51563201 is an apocalyptic number.

It is an amenable number.

51563201 is a deficient number, since it is larger than the sum of its proper divisors (1).

51563201 is an equidigital number, since it uses as much as digits as its factorization.

51563201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51563201 is about 7180.7521193814. The cubic root of 51563201 is about 372.2030749422.

Adding to 51563201 its reverse (10236515), we get a palindrome (61799716).

The spelling of 51563201 in words is "fifty-one million, five hundred sixty-three thousand, two hundred one".