51716543 has 2 divisors, whose sum is σ = 51716544. Its totient is φ = 51716542.

The previous prime is 51716531. The next prime is 51716579. The reversal of 51716543 is 34561715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51716543 - 2⁴ = 51716527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51716843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25858271 + 25858272.

It is an arithmetic number, because the mean of its divisors is an integer number (25858272).

Almost surely, 2^51716543 is an apocalyptic number.

51716543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51716543 is an equidigital number, since it uses as much as digits as its factorization.

51716543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 51716543 is about 7191.4214867438. The cubic root of 51716543 is about 372.5716703678.

The spelling of 51716543 in words is "fifty-one million, seven hundred sixteen thousand, five hundred forty-three".