487357261 has 2 divisors, whose sum is σ = 487357262. Its totient is φ = 487357260.

The previous prime is 487357259. The next prime is 487357289. The reversal of 487357261 is 162753784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292615236 + 194742025 = 17106^2 + 13955^2 .

It is a cyclic number.

It is not a de Polignac number, because 487357261 - 2¹ = 487357259 is a prime.

Together with 487357259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487357061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243678630 + 243678631.

It is an arithmetic number, because the mean of its divisors is an integer number (243678631).

Almost surely, 2^487357261 is an apocalyptic number.

It is an amenable number.

487357261 is a deficient number, since it is larger than the sum of its proper divisors (1).

487357261 is an equidigital number, since it uses as much as digits as its factorization.

487357261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 487357261 is about 22076.1695273433. The cubic root of 487357261 is about 786.9536371830.

The spelling of 487357261 in words is "four hundred eighty-seven million, three hundred fifty-seven thousand, two hundred sixty-one".