51130643 has 2 divisors, whose sum is σ = 51130644. Its totient is φ = 51130642.

The previous prime is 51130631. The next prime is 51130711. The reversal of 51130643 is 34603115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51130643 - 2¹⁰ = 51129619 is a prime.

It is a super-2 number, since 2×51130643² = 5228685307186898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51130613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25565321 + 25565322.

It is an arithmetic number, because the mean of its divisors is an integer number (25565322).

Almost surely, 2^51130643 is an apocalyptic number.

51130643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51130643 is an equidigital number, since it uses as much as digits as its factorization.

51130643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51130643 is about 7150.5694178855. The cubic root of 51130643 is about 371.1593607776.

Adding to 51130643 its reverse (34603115), we get a palindrome (85733758).

The spelling of 51130643 in words is "fifty-one million, one hundred thirty thousand, six hundred forty-three".