505270657 has 2 divisors, whose sum is σ = 505270658. Its totient is φ = 505270656.

The previous prime is 505270621. The next prime is 505270697. The reversal of 505270657 is 756072505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475196401 + 30074256 = 21799^2 + 5484^2 .

It is a cyclic number.

It is not a de Polignac number, because 505270657 - 2¹⁹ = 504746369 is a prime.

It is not a weakly prime, because it can be changed into another prime (505270607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252635328 + 252635329.

It is an arithmetic number, because the mean of its divisors is an integer number (252635329).

Almost surely, 2^505270657 is an apocalyptic number.

It is an amenable number.

505270657 is a deficient number, since it is larger than the sum of its proper divisors (1).

505270657 is an equidigital number, since it uses as much as digits as its factorization.

505270657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 505270657 is about 22478.2262867870. The cubic root of 505270657 is about 796.4796656338.

The spelling of 505270657 in words is "five hundred five million, two hundred seventy thousand, six hundred fifty-seven".