51530351 has 2 divisors, whose sum is σ = 51530352. Its totient is φ = 51530350.

The previous prime is 51530329. The next prime is 51530387. The reversal of 51530351 is 15303515.

51530351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51530351 - 2⁶ = 51530287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51530321) 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, 25765175 + 25765176.

It is an arithmetic number, because the mean of its divisors is an integer number (25765176).

Almost surely, 2^51530351 is an apocalyptic number.

51530351 is a deficient number, since it is larger than the sum of its proper divisors (1).

51530351 is an equidigital number, since it uses as much as digits as its factorization.

51530351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 51530351 is about 7178.4643901046. The cubic root of 51530351 is about 372.1240168271.

Adding to 51530351 its reverse (15303515), we get a palindrome (66833866).

The spelling of 51530351 in words is "fifty-one million, five hundred thirty thousand, three hundred fifty-one".