51858229 has 2 divisors, whose sum is σ = 51858230. Its totient is φ = 51858228.

The previous prime is 51858223. The next prime is 51858241. The reversal of 51858229 is 92285815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 14976900 = 6073^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 51858229 - 2¹³ = 51850037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51858191 and 51858200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51858223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25929114 + 25929115.

It is an arithmetic number, because the mean of its divisors is an integer number (25929115).

Almost surely, 2^51858229 is an apocalyptic number.

It is an amenable number.

51858229 is a deficient number, since it is larger than the sum of its proper divisors (1).

51858229 is an equidigital number, since it uses as much as digits as its factorization.

51858229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 40.

The square root of 51858229 is about 7201.2657915119. The cubic root of 51858229 is about 372.9116006400.

The spelling of 51858229 in words is "fifty-one million, eight hundred fifty-eight thousand, two hundred twenty-nine".