505501057 has 2 divisors, whose sum is σ = 505501058. Its totient is φ = 505501056.

The previous prime is 505501033. The next prime is 505501081. The reversal of 505501057 is 750105505.

It is a balanced prime because it is at equal distance from previous prime (505501033) and next prime (505501081).

It can be written as a sum of positive squares in only one way, i.e., 257249521 + 248251536 = 16039^2 + 15756^2 .

It is a cyclic number.

It is not a de Polignac number, because 505501057 - 2²³ = 497112449 is a prime.

It is not a weakly prime, because it can be changed into another prime (505501357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252750528 + 252750529.

It is an arithmetic number, because the mean of its divisors is an integer number (252750529).

Almost surely, 2^505501057 is an apocalyptic number.

It is an amenable number.

505501057 is a deficient number, since it is larger than the sum of its proper divisors (1).

505501057 is an equidigital number, since it uses as much as digits as its factorization.

505501057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 505501057 is about 22483.3506622122. The cubic root of 505501057 is about 796.6007103495.

The spelling of 505501057 in words is "five hundred five million, five hundred one thousand, fifty-seven".