851954 has 4 divisors (see below), whose sum is σ = 1277934. Its totient is φ = 425976.

The previous prime is 851953. The next prime is 851957. The reversal of 851954 is 459158.

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., 851929 + 25 = 923^2 + 5^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 851954.

It is not an unprimeable number, because it can be changed into a prime (851953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212987 + ... + 212990.

2⁸⁵¹⁹⁵⁴ is an apocalyptic number.

851954 is a deficient number, since it is larger than the sum of its proper divisors (425980).

851954 is a wasteful number, since it uses less digits than its factorization.

851954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425979.

The product of its digits is 7200, while the sum is 32.

The square root of 851954 is about 923.0135426959. The cubic root of 851954 is about 94.7993549186.

The spelling of 851954 in words is "eight hundred fifty-one thousand, nine hundred fifty-four".