51204871 has 2 divisors, whose sum is σ = 51204872. Its totient is φ = 51204870.

The previous prime is 51204869. The next prime is 51204911. The reversal of 51204871 is 17840215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51204871 - 2¹ = 51204869 is a prime.

Together with 51204869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602435 + 25602436.

It is an arithmetic number, because the mean of its divisors is an integer number (25602436).

Almost surely, 2^51204871 is an apocalyptic number.

51204871 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204871 is an equidigital number, since it uses as much as digits as its factorization.

51204871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51204871 is about 7155.7578913767. The cubic root of 51204871 is about 371.3388819298.

The spelling of 51204871 in words is "fifty-one million, two hundred four thousand, eight hundred seventy-one".