504775129 has 2 divisors, whose sum is σ = 504775130. Its totient is φ = 504775128.

The previous prime is 504775097. The next prime is 504775157. The reversal of 504775129 is 921577405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494840025 + 9935104 = 22245^2 + 3152^2 .

It is a cyclic number.

It is not a de Polignac number, because 504775129 - 2⁵ = 504775097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 504775091 and 504775100.

It is not a weakly prime, because it can be changed into another prime (504770129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252387564 + 252387565.

It is an arithmetic number, because the mean of its divisors is an integer number (252387565).

Almost surely, 2^504775129 is an apocalyptic number.

It is an amenable number.

504775129 is a deficient number, since it is larger than the sum of its proper divisors (1).

504775129 is an equidigital number, since it uses as much as digits as its factorization.

504775129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 504775129 is about 22467.2011830579. The cubic root of 504775129 is about 796.2192065028.

The spelling of 504775129 in words is "five hundred four million, seven hundred seventy-five thousand, one hundred twenty-nine".