851252404 has 6 divisors (see below), whose sum is σ = 1489691714. Its totient is φ = 425626200.

The previous prime is 851252401. The next prime is 851252411. The reversal of 851252404 is 404252158.

851252404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 840884004 + 10368400 = 28998^2 + 3220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851252401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106406547 + ... + 106406554.

Almost surely, 2^851252404 is an apocalyptic number.

It is an amenable number.

851252404 is a deficient number, since it is larger than the sum of its proper divisors (638439310).

851252404 is a wasteful number, since it uses less digits than its factorization.

851252404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212813105 (or 212813103 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 851252404 is about 29176.2301197396. The cubic root of 851252404 is about 947.7332490828.

The spelling of 851252404 in words is "eight hundred fifty-one million, two hundred fifty-two thousand, four hundred four".