474491257 has 2 divisors, whose sum is σ = 474491258. Its totient is φ = 474491256.

The previous prime is 474491249. The next prime is 474491263. The reversal of 474491257 is 752194474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445589881 + 28901376 = 21109^2 + 5376^2 .

It is a cyclic number.

It is not a de Polignac number, because 474491257 - 2³ = 474491249 is a prime.

It is not a weakly prime, because it can be changed into another prime (474491057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237245628 + 237245629.

It is an arithmetic number, because the mean of its divisors is an integer number (237245629).

Almost surely, 2^474491257 is an apocalyptic number.

It is an amenable number.

474491257 is a deficient number, since it is larger than the sum of its proper divisors (1).

474491257 is an equidigital number, since it uses as much as digits as its factorization.

474491257 is an odious number, because the sum of its binary digits is odd.

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

The square root of 474491257 is about 21782.8202260405. The cubic root of 474491257 is about 779.9667183915.

The spelling of 474491257 in words is "four hundred seventy-four million, four hundred ninety-one thousand, two hundred fifty-seven".