51425203 has 2 divisors, whose sum is σ = 51425204. Its totient is φ = 51425202.

The previous prime is 51425161. The next prime is 51425237. The reversal of 51425203 is 30252415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51425203 is a prime.

It is not a weakly prime, because it can be changed into another prime (51425243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712601 + 25712602.

It is an arithmetic number, because the mean of its divisors is an integer number (25712602).

Almost surely, 2^51425203 is an apocalyptic number.

51425203 is a deficient number, since it is larger than the sum of its proper divisors (1).

51425203 is an equidigital number, since it uses as much as digits as its factorization.

51425203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51425203 is about 7171.1367996992. The cubic root of 51425203 is about 371.8707373567.

Adding to 51425203 its reverse (30252415), we get a palindrome (81677618).

The spelling of 51425203 in words is "fifty-one million, four hundred twenty-five thousand, two hundred three".