257041147 has 12 divisors (see below), whose sum is σ = 282976120. Its totient is φ = 233307360.

The previous prime is 257041133. The next prime is 257041157. The reversal of 257041147 is 741140752.

It is not a de Polignac number, because 257041147 - 2⁷ = 257041019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257041117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102703 + ... + 105175.

Almost surely, 2^257041147 is an apocalyptic number.

257041147 is a deficient number, since it is larger than the sum of its proper divisors (25934973).

257041147 is a wasteful number, since it uses less digits than its factorization.

257041147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 257041147 is about 16032.5028301884. The cubic root of 257041147 is about 635.8200470206.

Adding to 257041147 its reverse (741140752), we get a palindrome (998181899).

The spelling of 257041147 in words is "two hundred fifty-seven million, forty-one thousand, one hundred forty-seven".