851047045 has 16 divisors (see below), whose sum is σ = 1050094080. Its totient is φ = 661737600.

The previous prime is 851047037. The next prime is 851047049. The reversal of 851047045 is 540740158.

851047045 = 3181² + 3182² + ... + 3262².

It is not a de Polignac number, because 851047045 - 2³ = 851047037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 851047045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851047049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47896 + ... + 63214.

It is an arithmetic number, because the mean of its divisors is an integer number (65630880).

Almost surely, 2^851047045 is an apocalyptic number.

It is an amenable number.

851047045 is a deficient number, since it is larger than the sum of its proper divisors (199047035).

851047045 is a wasteful number, since it uses less digits than its factorization.

851047045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15636.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 851047045 is about 29172.7106214010. The cubic root of 851047045 is about 947.6570314987.

It can be divided in two parts, 8510 and 47045, that added together give a palindrome (55555).

The spelling of 851047045 in words is "eight hundred fifty-one million, forty-seven thousand, forty-five".