51903427 has 2 divisors, whose sum is σ = 51903428. Its totient is φ = 51903426.

The previous prime is 51903413. The next prime is 51903443. The reversal of 51903427 is 72430915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51903427 - 2¹⁵ = 51870659 is a prime.

It is not a weakly prime, because it can be changed into another prime (51903407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25951713 + 25951714.

It is an arithmetic number, because the mean of its divisors is an integer number (25951714).

Almost surely, 2^51903427 is an apocalyptic number.

51903427 is a deficient number, since it is larger than the sum of its proper divisors (1).

51903427 is an equidigital number, since it uses as much as digits as its factorization.

51903427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51903427 is about 7204.4033063121. The cubic root of 51903427 is about 373.0199085177.

The spelling of 51903427 in words is "fifty-one million, nine hundred three thousand, four hundred twenty-seven".