51012623 has 2 divisors, whose sum is σ = 51012624. Its totient is φ = 51012622.

The previous prime is 51012617. The next prime is 51012629. The reversal of 51012623 is 32621015.

It is a balanced prime because it is at equal distance from previous prime (51012617) and next prime (51012629).

It is a cyclic number.

It is not a de Polignac number, because 51012623 - 2²² = 46818319 is a prime.

It is equal to p_3058211 and since 51012623 and 3058211 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 51012595 and 51012604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51012629) 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, 25506311 + 25506312.

It is an arithmetic number, because the mean of its divisors is an integer number (25506312).

Almost surely, 2^51012623 is an apocalyptic number.

51012623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51012623 is an equidigital number, since it uses as much as digits as its factorization.

51012623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51012623 is about 7142.3121606382. The cubic root of 51012623 is about 370.8735701602.

Adding to 51012623 its reverse (32621015), we get a palindrome (83633638).

The spelling of 51012623 in words is "fifty-one million, twelve thousand, six hundred twenty-three".