51245423 has 2 divisors, whose sum is σ = 51245424. Its totient is φ = 51245422.

The previous prime is 51245401. The next prime is 51245431. The reversal of 51245423 is 32454215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51245423 - 2¹⁰ = 51244399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51245392 and 51245401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51245443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622711 + 25622712.

It is an arithmetic number, because the mean of its divisors is an integer number (25622712).

Almost surely, 2^51245423 is an apocalyptic number.

51245423 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245423 is an equidigital number, since it uses as much as digits as its factorization.

51245423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 26.

The square root of 51245423 is about 7158.5908529542. The cubic root of 51245423 is about 371.4368840701.

Adding to 51245423 its reverse (32454215), we get a palindrome (83699638).

The spelling of 51245423 in words is "fifty-one million, two hundred forty-five thousand, four hundred twenty-three".