861549352 has 32 divisors (see below), whose sum is σ = 1641974400. Its totient is φ = 423730944.

The previous prime is 861549347. The next prime is 861549361. The reversal of 861549352 is 253945168.

It is a junction number, because it is equal to n+sod(n) for n = 861549299 and 861549308.

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, 176448 + ... + 181264.

It is an arithmetic number, because the mean of its divisors is an integer number (51311700).

Almost surely, 2^861549352 is an apocalyptic number.

It is an amenable number.

861549352 is a deficient number, since it is larger than the sum of its proper divisors (780425048).

861549352 is a wasteful number, since it uses less digits than its factorization.

861549352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185 (or 5181 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 861549352 is about 29352.1609425950. The cubic root of 861549352 is about 951.5392781635.

The spelling of 861549352 in words is "eight hundred sixty-one million, five hundred forty-nine thousand, three hundred fifty-two".