51504727 has 2 divisors, whose sum is σ = 51504728. Its totient is φ = 51504726.

The previous prime is 51504707. The next prime is 51504731. The reversal of 51504727 is 72740515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51504727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752363 + 25752364.

It is an arithmetic number, because the mean of its divisors is an integer number (25752364).

Almost surely, 2^51504727 is an apocalyptic number.

51504727 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504727 is an equidigital number, since it uses as much as digits as its factorization.

51504727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 51504727 is about 7176.6793853425. The cubic root of 51504727 is about 372.0623257618.

The spelling of 51504727 in words is "fifty-one million, five hundred four thousand, seven hundred twenty-seven".