257412293 has 8 divisors (see below), whose sum is σ = 266276640. Its totient is φ = 248648400.

The previous prime is 257412277. The next prime is 257412301. The reversal of 257412293 is 392214752.

It is a happy number.

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 257412293 - 2⁴ = 257412277 is a prime.

It is a super-2 number, since 2×257412293² = 132522177175035698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257412263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19883 + ... + 30168.

It is an arithmetic number, because the mean of its divisors is an integer number (33284580).

Almost surely, 2^257412293 is an apocalyptic number.

It is an amenable number.

257412293 is a deficient number, since it is larger than the sum of its proper divisors (8864347).

257412293 is a wasteful number, since it uses less digits than its factorization.

257412293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50227.

The product of its digits is 30240, while the sum is 35.

The square root of 257412293 is about 16044.0734540827. The cubic root of 257412293 is about 636.1259235718.

The spelling of 257412293 in words is "two hundred fifty-seven million, four hundred twelve thousand, two hundred ninety-three".