851456 has 20 divisors (see below), whose sum is σ = 1702272. Its totient is φ = 425472.

The previous prime is 851449. The next prime is 851471. The reversal of 851456 is 654158.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 851456.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320 + ... + 1343.

2⁸⁵¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

851456 is a deficient number, since it is larger than the sum of its proper divisors (850816).

851456 is an equidigital number, since it uses as much as digits as its factorization.

851456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681 (or 1665 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 851456 is about 922.7437347390. The cubic root of 851456 is about 94.7808800242.

The spelling of 851456 in words is "eight hundred fifty-one thousand, four hundred fifty-six".