51228623 has 2 divisors, whose sum is σ = 51228624. Its totient is φ = 51228622.

The previous prime is 51228607. The next prime is 51228643. The reversal of 51228623 is 32682215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51228623 - 2⁴ = 51228607 is a prime.

It is a super-2 number, since 2×51228623² = 5248743628952258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51228643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25614311 + 25614312.

It is an arithmetic number, because the mean of its divisors is an integer number (25614312).

Almost surely, 2^51228623 is an apocalyptic number.

51228623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51228623 is an equidigital number, since it uses as much as digits as its factorization.

51228623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 51228623 is about 7157.4173414717. The cubic root of 51228623 is about 371.3962897346.

The spelling of 51228623 in words is "fifty-one million, two hundred twenty-eight thousand, six hundred twenty-three".