257241356 has 6 divisors (see below), whose sum is σ = 450172380. Its totient is φ = 128620676.

The previous prime is 257241329. The next prime is 257241359. The reversal of 257241356 is 653142752.

It is not an unprimeable number, because it can be changed into a prime (257241359) 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 as a sum of consecutive naturals, namely, 32155166 + ... + 32155173.

It is an arithmetic number, because the mean of its divisors is an integer number (75028730).

Almost surely, 2^257241356 is an apocalyptic number.

It is an amenable number.

257241356 is a deficient number, since it is larger than the sum of its proper divisors (192931024).

257241356 is a wasteful number, since it uses less digits than its factorization.

257241356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64310343 (or 64310341 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 257241356 is about 16038.7454621613. The cubic root of 257241356 is about 635.9850839691.

The spelling of 257241356 in words is "two hundred fifty-seven million, two hundred forty-one thousand, three hundred fifty-six".