471648257 has 4 divisors (see below), whose sum is σ = 487912020. Its totient is φ = 455384496.

The previous prime is 471648251. The next prime is 471648283. The reversal of 471648257 is 752846174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752846174 = 2 ⋅376423087.

It can be written as a sum of positive squares in 2 ways, for example, as 288966001 + 182682256 = 16999^2 + 13516^2 .

It is a cyclic number.

It is not a de Polignac number, because 471648257 - 2⁶ = 471648193 is a prime.

It is a super-2 number, since 2×471648257² = 444904156662276098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (471648251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8131838 + ... + 8131895.

It is an arithmetic number, because the mean of its divisors is an integer number (121978005).

Almost surely, 2^471648257 is an apocalyptic number.

It is an amenable number.

471648257 is a deficient number, since it is larger than the sum of its proper divisors (16263763).

471648257 is a wasteful number, since it uses less digits than its factorization.

471648257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16263762.

The product of its digits is 376320, while the sum is 44.

The square root of 471648257 is about 21717.4643317308. The cubic root of 471648257 is about 778.4058263201.

The spelling of 471648257 in words is "four hundred seventy-one million, six hundred forty-eight thousand, two hundred fifty-seven".