872150857 has 8 divisors (see below), whose sum is σ = 886412232. Its totient is φ = 858000000.

The previous prime is 872150827. The next prime is 872150861. The reversal of 872150857 is 758051278.

It can be written as a sum of positive squares in 4 ways, for example, as 53275401 + 818875456 = 7299^2 + 28616^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872150857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872150827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11644 + ... + 43357.

It is an arithmetic number, because the mean of its divisors is an integer number (110801529).

Almost surely, 2^872150857 is an apocalyptic number.

It is an amenable number.

872150857 is a deficient number, since it is larger than the sum of its proper divisors (14261375).

872150857 is a wasteful number, since it uses less digits than its factorization.

872150857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55259.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 872150857 is about 29532.2003413224. The cubic root of 872150857 is about 955.4263264701.

The spelling of 872150857 in words is "eight hundred seventy-two million, one hundred fifty thousand, eight hundred fifty-seven".