851550040 has 32 divisors (see below), whose sum is σ = 2090169360. Its totient is φ = 309654400.

The previous prime is 851550031. The next prime is 851550053. The reversal of 851550040 is 40055158.

851550040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 851549990 and 851550008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967231 + ... + 968110.

Almost surely, 2^851550040 is an apocalyptic number.

It is an amenable number.

851550040 is an abundant number, since it is smaller than the sum of its proper divisors (1238619320).

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

851550040 is a wasteful number, since it uses less digits than its factorization.

851550040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935363 (or 1935359 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 851550040 is about 29181.3303329372. The cubic root of 851550040 is about 947.8436928879.

The spelling of 851550040 in words is "eight hundred fifty-one million, five hundred fifty thousand, forty".