51394463 has 2 divisors, whose sum is σ = 51394464. Its totient is φ = 51394462.

The previous prime is 51394439. The next prime is 51394493. The reversal of 51394463 is 36449315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51394463 - 2¹⁰ = 51393439 is a prime.

It is a Chen prime.

It is equal to p_3079727 and since 51394463 and 3079727 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51394403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25697231 + 25697232.

It is an arithmetic number, because the mean of its divisors is an integer number (25697232).

Almost surely, 2^51394463 is an apocalyptic number.

51394463 is a deficient number, since it is larger than the sum of its proper divisors (1).

51394463 is an equidigital number, since it uses as much as digits as its factorization.

51394463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 51394463 is about 7168.9931650128. The cubic root of 51394463 is about 371.7966259334.

The spelling of 51394463 in words is "fifty-one million, three hundred ninety-four thousand, four hundred sixty-three".