51235601 has 2 divisors, whose sum is σ = 51235602. Its totient is φ = 51235600.

The previous prime is 51235567. The next prime is 51235607. The reversal of 51235601 is 10653215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42562576 + 8673025 = 6524^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 51235601 - 2¹⁰ = 51234577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51235607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617800 + 25617801.

It is an arithmetic number, because the mean of its divisors is an integer number (25617801).

Almost surely, 2^51235601 is an apocalyptic number.

It is an amenable number.

51235601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51235601 is an equidigital number, since it uses as much as digits as its factorization.

51235601 is an evil number, because the sum of its binary digits is even.

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

The square root of 51235601 is about 7157.9047912081. The cubic root of 51235601 is about 371.4131519592.

Adding to 51235601 its reverse (10653215), we get a palindrome (61888816).

The spelling of 51235601 in words is "fifty-one million, two hundred thirty-five thousand, six hundred one".