51227443 has 4 divisors (see below), whose sum is σ = 54240840. Its totient is φ = 48214048.

The previous prime is 51227441. The next prime is 51227459. The reversal of 51227443 is 34472215.

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 51227443 - 2¹ = 51227441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51227441) 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, 1506673 + ... + 1506706.

It is an arithmetic number, because the mean of its divisors is an integer number (13560210).

Almost surely, 2^51227443 is an apocalyptic number.

51227443 is a deficient number, since it is larger than the sum of its proper divisors (3013397).

51227443 is a wasteful number, since it uses less digits than its factorization.

51227443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013396.

The product of its digits is 6720, while the sum is 28.

The square root of 51227443 is about 7157.3349090286. The cubic root of 51227443 is about 371.3934381322.

Adding to 51227443 its reverse (34472215), we get a palindrome (85699658).

The spelling of 51227443 in words is "fifty-one million, two hundred twenty-seven thousand, four hundred forty-three".