257115223 has 8 divisors (see below), whose sum is σ = 264773376. Its totient is φ = 249523200.

The previous prime is 257115203. The next prime is 257115227. The reversal of 257115223 is 322511752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257115223 is a prime.

It is a super-2 number, since 2×257115223² = 132216475796679458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257115191 and 257115200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257115227) 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, 8586 + ... + 24247.

It is an arithmetic number, because the mean of its divisors is an integer number (33096672).

Almost surely, 2^257115223 is an apocalyptic number.

257115223 is a deficient number, since it is larger than the sum of its proper divisors (7658153).

257115223 is a wasteful number, since it uses less digits than its factorization.

257115223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33065.

The product of its digits is 4200, while the sum is 28.

The square root of 257115223 is about 16034.8128458052. The cubic root of 257115223 is about 635.8811195799.

Adding to 257115223 its reverse (322511752), we get a palindrome (579626975).

The spelling of 257115223 in words is "two hundred fifty-seven million, one hundred fifteen thousand, two hundred twenty-three".