51132463 has 4 divisors (see below), whose sum is σ = 51331680. Its totient is φ = 50933248.

The previous prime is 51132451. The next prime is 51132493. The reversal of 51132463 is 36423115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36423115 = 5 ⋅7284623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51132463 is a prime.

It is a super-2 number, since 2×51132463² = 5229057544892738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51132493) 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, 99223 + ... + 99736.

It is an arithmetic number, because the mean of its divisors is an integer number (12832920).

Almost surely, 2^51132463 is an apocalyptic number.

51132463 is a deficient number, since it is larger than the sum of its proper divisors (199217).

51132463 is a wasteful number, since it uses less digits than its factorization.

51132463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199216.

The product of its digits is 2160, while the sum is 25.

The square root of 51132463 is about 7150.6966793453. The cubic root of 51132463 is about 371.1637645427.

Adding to 51132463 its reverse (36423115), we get a palindrome (87555578).

The spelling of 51132463 in words is "fifty-one million, one hundred thirty-two thousand, four hundred sixty-three".