51230429 has 2 divisors, whose sum is σ = 51230430. Its totient is φ = 51230428.

The previous prime is 51230419. The next prime is 51230437. The reversal of 51230429 is 92403215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46607929 + 4622500 = 6827^2 + 2150^2 .

It is a cyclic number.

It is not a de Polignac number, because 51230429 - 2¹² = 51226333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51230398 and 51230407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51230419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25615214 + 25615215.

It is an arithmetic number, because the mean of its divisors is an integer number (25615215).

Almost surely, 2^51230429 is an apocalyptic number.

It is an amenable number.

51230429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51230429 is an equidigital number, since it uses as much as digits as its factorization.

51230429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51230429 is about 7157.5435031860. The cubic root of 51230429 is about 371.4006540513.

The spelling of 51230429 in words is "fifty-one million, two hundred thirty thousand, four hundred twenty-nine".