51943459 has 2 divisors, whose sum is σ = 51943460. Its totient is φ = 51943458.

The previous prime is 51943457. The next prime is 51943477. The reversal of 51943459 is 95434915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51943459 - 2¹ = 51943457 is a prime.

Together with 51943457, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51943457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25971729 + 25971730.

It is an arithmetic number, because the mean of its divisors is an integer number (25971730).

Almost surely, 2^51943459 is an apocalyptic number.

51943459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51943459 is an equidigital number, since it uses as much as digits as its factorization.

51943459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 51943459 is about 7207.1810716812. The cubic root of 51943459 is about 373.1157846244.

The spelling of 51943459 in words is "fifty-one million, nine hundred forty-three thousand, four hundred fifty-nine".