51204863 has 2 divisors, whose sum is σ = 51204864. Its totient is φ = 51204862.

The previous prime is 51204851. The next prime is 51204869. The reversal of 51204863 is 36840215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51204863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602431 + 25602432.

It is an arithmetic number, because the mean of its divisors is an integer number (25602432).

Almost surely, 2^51204863 is an apocalyptic number.

51204863 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204863 is an equidigital number, since it uses as much as digits as its factorization.

51204863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 51204863 is about 7155.7573323863. The cubic root of 51204863 is about 371.3388625911.

The spelling of 51204863 in words is "fifty-one million, two hundred four thousand, eight hundred sixty-three".