257430611 has 8 divisors (see below), whose sum is σ = 260218224. Its totient is φ = 254652160.

The previous prime is 257430599. The next prime is 257430617. The reversal of 257430611 is 116034752.

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 257430611 - 2¹⁰ = 257429587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257430617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64391 + ... + 68271.

It is an arithmetic number, because the mean of its divisors is an integer number (32527278).

Almost surely, 2^257430611 is an apocalyptic number.

257430611 is a deficient number, since it is larger than the sum of its proper divisors (2787613).

257430611 is a wasteful number, since it uses less digits than its factorization.

257430611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 257430611 is about 16044.6443089275. The cubic root of 257430611 is about 636.1410125667.

The spelling of 257430611 in words is "two hundred fifty-seven million, four hundred thirty thousand, six hundred eleven".