51132443 has 4 divisors (see below), whose sum is σ = 51297168. Its totient is φ = 50967720.

The previous prime is 51132397. The next prime is 51132449. The reversal of 51132443 is 34423115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51132443 is a prime.

It is a super-2 number, since 2×51132443² = 5229053454296498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51132449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81896 + ... + 82517.

It is an arithmetic number, because the mean of its divisors is an integer number (12824292).

Almost surely, 2^51132443 is an apocalyptic number.

51132443 is a deficient number, since it is larger than the sum of its proper divisors (164725).

51132443 is a wasteful number, since it uses less digits than its factorization.

51132443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164724.

The product of its digits is 1440, while the sum is 23.

The square root of 51132443 is about 7150.6952808800. The cubic root of 51132443 is about 371.1637161502.

Adding to 51132443 its reverse (34423115), we get a palindrome (85555558).

The spelling of 51132443 in words is "fifty-one million, one hundred thirty-two thousand, four hundred forty-three".