851522280 has 64 divisors (see below), whose sum is σ = 2919507840. Its totient is φ = 194633472.

The previous prime is 851522251. The next prime is 851522281. The reversal of 851522280 is 82225158.

It is not an unprimeable number, because it can be changed into a prime (851522281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506019 + ... + 507698.

It is an arithmetic number, because the mean of its divisors is an integer number (45617310).

Almost surely, 2^851522280 is an apocalyptic number.

It is an amenable number.

851522280 is an abundant number, since it is smaller than the sum of its proper divisors (2067985560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851522280 is a wasteful number, since it uses less digits than its factorization.

851522280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013738 (or 1013734 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 851522280 is about 29180.8546824797. The cubic root of 851522280 is about 947.8333930717.

The spelling of 851522280 in words is "eight hundred fifty-one million, five hundred twenty-two thousand, two hundred eighty".