257048147 has 8 divisors (see below), whose sum is σ = 263638032. Its totient is φ = 250473600.

The previous prime is 257048119. The next prime is 257048153. The reversal of 257048147 is 741840752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257048147 - 2¹⁴ = 257031763 is a prime.

It is a super-2 number, since 2×257048147² = 132147499752267218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257048147.

It is not an unprimeable number, because it can be changed into a prime (257048167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35072 + ... + 41762.

It is an arithmetic number, because the mean of its divisors is an integer number (32954754).

Almost surely, 2^257048147 is an apocalyptic number.

257048147 is a deficient number, since it is larger than the sum of its proper divisors (6589885).

257048147 is an equidigital number, since it uses as much as digits as its factorization.

257048147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 257048147 is about 16032.7211352284. The cubic root of 257048147 is about 635.8258187294.

Adding to 257048147 its reverse (741840752), we get a palindrome (998888899).

The spelling of 257048147 in words is "two hundred fifty-seven million, forty-eight thousand, one hundred forty-seven".