992251 has 8 divisors (see below), whose sum is σ = 1078784. Its totient is φ = 907200.

The previous prime is 992249. The next prime is 992263. The reversal of 992251 is 152299.

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

It is a 6-Lehmer number, since φ(992251) divides (992251-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 992251 - 2¹ = 992249 is a prime.

It is a Duffinian number.

992251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (992231) 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, 1351 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (134848).

2⁹⁹²²⁵¹ is an apocalyptic number.

992251 is a deficient number, since it is larger than the sum of its proper divisors (86533).

992251 is a wasteful number, since it uses less digits than its factorization.

992251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its digits is 1620, while the sum is 28.

The square root of 992251 is about 996.1179649017. The cubic root of 992251 is about 99.7410299239.

The spelling of 992251 in words is "nine hundred ninety-two thousand, two hundred fifty-one".