855147556 has 6 divisors (see below), whose sum is σ = 1496508230. Its totient is φ = 427573776.

The previous prime is 855147551. The next prime is 855147569. The reversal of 855147556 is 655741558.

It can be written as a sum of positive squares in only one way, i.e., 581774400 + 273373156 = 24120^2 + 16534^2 .

It is not an unprimeable number, because it can be changed into a prime (855147551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106893441 + ... + 106893448.

Almost surely, 2^855147556 is an apocalyptic number.

It is an amenable number.

855147556 is a deficient number, since it is larger than the sum of its proper divisors (641360674).

855147556 is a wasteful number, since it uses less digits than its factorization.

855147556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213786893 (or 213786891 counting only the distinct ones).

The product of its digits is 840000, while the sum is 46.

The square root of 855147556 is about 29242.9060799367. The cubic root of 855147556 is about 949.1765925240.

The spelling of 855147556 in words is "eight hundred fifty-five million, one hundred forty-seven thousand, five hundred fifty-six".