51163463 has 4 divisors (see below), whose sum is σ = 55099128. Its totient is φ = 47227800.

The previous prime is 51163459. The next prime is 51163493. The reversal of 51163463 is 36436115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51163463 - 2² = 51163459 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 (51163403) 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, 1967813 + ... + 1967838.

It is an arithmetic number, because the mean of its divisors is an integer number (13774782).

Almost surely, 2^51163463 is an apocalyptic number.

51163463 is a deficient number, since it is larger than the sum of its proper divisors (3935665).

51163463 is a wasteful number, since it uses less digits than its factorization.

51163463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935664.

The product of its digits is 6480, while the sum is 29.

The square root of 51163463 is about 7152.8639718647. The cubic root of 51163463 is about 371.2387576850.

Adding to 51163463 its reverse (36436115), we get a palindrome (87599578).

The spelling of 51163463 in words is "fifty-one million, one hundred sixty-three thousand, four hundred sixty-three".