501536257 has 2 divisors, whose sum is σ = 501536258. Its totient is φ = 501536256.

The previous prime is 501536249. The next prime is 501536267. The reversal of 501536257 is 752635105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414692496 + 86843761 = 20364^2 + 9319^2 .

It is a cyclic number.

It is not a de Polignac number, because 501536257 - 2³ = 501536249 is a prime.

It is not a weakly prime, because it can be changed into another prime (501536267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250768128 + 250768129.

It is an arithmetic number, because the mean of its divisors is an integer number (250768129).

Almost surely, 2^501536257 is an apocalyptic number.

It is an amenable number.

501536257 is a deficient number, since it is larger than the sum of its proper divisors (1).

501536257 is an equidigital number, since it uses as much as digits as its factorization.

501536257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 501536257 is about 22395.0051797270. The cubic root of 501536257 is about 794.5125801944.

The spelling of 501536257 in words is "five hundred one million, five hundred thirty-six thousand, two hundred fifty-seven".