51124643 has 2 divisors, whose sum is σ = 51124644. Its totient is φ = 51124642.

The previous prime is 51124589. The next prime is 51124657. The reversal of 51124643 is 34642115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51124643 - 2⁸ = 51124387 is a prime.

It is a super-2 number, since 2×51124643² = 5227458243754898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51124043) 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 as a sum of consecutive naturals, namely, 25562321 + 25562322.

It is an arithmetic number, because the mean of its divisors is an integer number (25562322).

Almost surely, 2^51124643 is an apocalyptic number.

51124643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51124643 is an equidigital number, since it uses as much as digits as its factorization.

51124643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 51124643 is about 7150.1498585694. The cubic root of 51124643 is about 371.1448421305.

Adding to 51124643 its reverse (34642115), we get a palindrome (85766758).

The spelling of 51124643 in words is "fifty-one million, one hundred twenty-four thousand, six hundred forty-three".