851282045 has 4 divisors (see below), whose sum is σ = 1021538460. Its totient is φ = 681025632.

The previous prime is 851282027. The next prime is 851282053. The reversal of 851282045 is 540282158.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 476898244 + 374383801 = 21838^2 + 19349^2 .

It is a cyclic number.

It is not a de Polignac number, because 851282045 - 2¹⁴ = 851265661 is a prime.

It is a super-2 number, since 2×851282045² = 1449362240278764050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 851281996 and 851282014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85128200 + ... + 85128209.

It is an arithmetic number, because the mean of its divisors is an integer number (255384615).

Almost surely, 2^851282045 is an apocalyptic number.

It is an amenable number.

851282045 is a deficient number, since it is larger than the sum of its proper divisors (170256415).

851282045 is a wasteful number, since it uses less digits than its factorization.

851282045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170256414.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 851282045 is about 29176.7380801898. The cubic root of 851282045 is about 947.7442491243.

The spelling of 851282045 in words is "eight hundred fifty-one million, two hundred eighty-two thousand, forty-five".