477945257 has 2 divisors, whose sum is σ = 477945258. Its totient is φ = 477945256.

The previous prime is 477945229. The next prime is 477945263. The reversal of 477945257 is 752549774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317694976 + 160250281 = 17824^2 + 12659^2 .

It is a cyclic number.

It is not a de Polignac number, because 477945257 - 2⁸ = 477945001 is a prime.

It is not a weakly prime, because it can be changed into another prime (477945217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238972628 + 238972629.

It is an arithmetic number, because the mean of its divisors is an integer number (238972629).

Almost surely, 2^477945257 is an apocalyptic number.

It is an amenable number.

477945257 is a deficient number, since it is larger than the sum of its proper divisors (1).

477945257 is an equidigital number, since it uses as much as digits as its factorization.

477945257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2469600, while the sum is 50.

The square root of 477945257 is about 21861.9591299591. The cubic root of 477945257 is about 781.8547015190.

The spelling of 477945257 in words is "four hundred seventy-seven million, nine hundred forty-five thousand, two hundred fifty-seven".