257226471 has 6 divisors (see below), whose sum is σ = 371549360. Its totient is φ = 171484308.

The previous prime is 257226469. The next prime is 257226509. The reversal of 257226471 is 174622752.

It is a happy number.

257226471 is a `hidden beast` number, since 2 + 5 + 7 + 2 + 2 + 647 + 1 = 666.

It is not a de Polignac number, because 257226471 - 2¹ = 257226469 is a prime.

It is a super-3 number, since 3×257226471³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257226421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14290351 + ... + 14290368.

Almost surely, 2^257226471 is an apocalyptic number.

257226471 is a deficient number, since it is larger than the sum of its proper divisors (114322889).

257226471 is a wasteful number, since it uses less digits than its factorization.

257226471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28580725 (or 28580722 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 257226471 is about 16038.2814228957. The cubic root of 257226471 is about 635.9728168636.

The spelling of 257226471 in words is "two hundred fifty-seven million, two hundred twenty-six thousand, four hundred seventy-one".