992257 has 8 divisors (see below), whose sum is σ = 1140800. Its totient is φ = 845424.

The previous prime is 992249. The next prime is 992263. The reversal of 992257 is 752299.

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 992257 - 2³ = 992249 is a prime.

It is a Duffinian number.

992257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (992267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (142600).

It is a Proth number, since it is equal to 969 ⋅ 2¹⁰ + 1 and 969 < 2¹⁰.

2⁹⁹²²⁵⁷ is an apocalyptic number.

It is an amenable number.

992257 is a deficient number, since it is larger than the sum of its proper divisors (148543).

992257 is a wasteful number, since it uses less digits than its factorization.

992257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its digits is 11340, while the sum is 34.

The square root of 992257 is about 996.1209765887. The cubic root of 992257 is about 99.7412309634.

The spelling of 992257 in words is "nine hundred ninety-two thousand, two hundred fifty-seven".