257424411 has 4 divisors (see below), whose sum is σ = 343232552. Its totient is φ = 171616272.

The previous prime is 257424397. The next prime is 257424437. The reversal of 257424411 is 114424752.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 257424411 - 2⁹ = 257423899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257424481) 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 3 ways as a sum of consecutive naturals, for example, 42904066 + ... + 42904071.

It is an arithmetic number, because the mean of its divisors is an integer number (85808138).

Almost surely, 2^257424411 is an apocalyptic number.

257424411 is a deficient number, since it is larger than the sum of its proper divisors (85808141).

257424411 is an equidigital number, since it uses as much as digits as its factorization.

257424411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85808140.

The product of its digits is 8960, while the sum is 30.

The square root of 257424411 is about 16044.4510968746. The cubic root of 257424411 is about 636.1359055517.

The spelling of 257424411 in words is "two hundred fifty-seven million, four hundred twenty-four thousand, four hundred eleven".