851701072 has 10 divisors (see below), whose sum is σ = 1650170858. Its totient is φ = 425850528.

The previous prime is 851701069. The next prime is 851701073. The reversal of 851701072 is 270107158.

It is a happy number.

851701072 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., 838913296 + 12787776 = 28964^2 + 3576^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851701073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26615643 + ... + 26615674.

Almost surely, 2^851701072 is an apocalyptic number.

It is an amenable number.

851701072 is a deficient number, since it is larger than the sum of its proper divisors (798469786).

851701072 is a wasteful number, since it uses less digits than its factorization.

851701072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53231325 (or 53231319 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 851701072 is about 29183.9180371656. The cubic root of 851701072 is about 947.8997264970.

The spelling of 851701072 in words is "eight hundred fifty-one million, seven hundred one thousand, seventy-two".