51903443 has 2 divisors, whose sum is σ = 51903444. Its totient is φ = 51903442.

The previous prime is 51903427. The next prime is 51903457. The reversal of 51903443 is 34430915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51903443 - 2⁴ = 51903427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51903403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25951721 + 25951722.

It is an arithmetic number, because the mean of its divisors is an integer number (25951722).

Almost surely, 2^51903443 is an apocalyptic number.

51903443 is a deficient number, since it is larger than the sum of its proper divisors (1).

51903443 is an equidigital number, since it uses as much as digits as its factorization.

51903443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 51903443 is about 7204.4044167440. The cubic root of 51903443 is about 373.0199468473.

The spelling of 51903443 in words is "fifty-one million, nine hundred three thousand, four hundred forty-three".