802154 has 4 divisors (see below), whose sum is σ = 1203234. Its totient is φ = 401076.

The previous prime is 802147. The next prime is 802159. The reversal of 802154 is 451208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 332929 = 685^2 + 577^2 .

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 802154.

It is not an unprimeable number, because it can be changed into a prime (802159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200537 + ... + 200540.

2⁸⁰²¹⁵⁴ is an apocalyptic number.

802154 is a deficient number, since it is larger than the sum of its proper divisors (401080).

802154 is a wasteful number, since it uses less digits than its factorization.

802154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401079.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 802154 is about 895.6305041701. The cubic root of 802154 is about 92.9150185269.

The spelling of 802154 in words is "eight hundred two thousand, one hundred fifty-four".