51396463 has 4 divisors (see below), whose sum is σ = 54101560. Its totient is φ = 48691368.

The previous prime is 51396461. The next prime is 51396473. The reversal of 51396463 is 36469315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36469315 = 5 ⋅7293863.

It is a cyclic number.

It is not a de Polignac number, because 51396463 - 2¹ = 51396461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51396461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352520 + ... + 1352557.

It is an arithmetic number, because the mean of its divisors is an integer number (13525390).

Almost surely, 2^51396463 is an apocalyptic number.

51396463 is a deficient number, since it is larger than the sum of its proper divisors (2705097).

51396463 is a wasteful number, since it uses less digits than its factorization.

51396463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705096.

The product of its digits is 58320, while the sum is 37.

The square root of 51396463 is about 7169.1326532573. The cubic root of 51396463 is about 371.8014486553.

The spelling of 51396463 in words is "fifty-one million, three hundred ninety-six thousand, four hundred sixty-three".