993257 has 4 divisors (see below), whose sum is σ = 1016400. Its totient is φ = 970116.

The previous prime is 993253. The next prime is 993269. The reversal of 993257 is 752399.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752399 = 23 ⋅32713.

It is a cyclic number.

It is not a de Polignac number, because 993257 - 2² = 993253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993253) 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 3 ways as a sum of consecutive naturals, for example, 11507 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (254100).

2⁹⁹³²⁵⁷ is an apocalyptic number.

It is an amenable number.

993257 is a deficient number, since it is larger than the sum of its proper divisors (23143).

993257 is a wasteful number, since it uses less digits than its factorization.

993257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142.

The product of its digits is 17010, while the sum is 35.

The square root of 993257 is about 996.6227972508. The cubic root of 993257 is about 99.7747262317.

The spelling of 993257 in words is "nine hundred ninety-three thousand, two hundred fifty-seven".