861481201 has 15 divisors (see below), whose sum is σ = 1006682201. Its totient is φ = 737179716.

The previous prime is 861481193. The next prime is 861481207. The reversal of 861481201 is 102184168.

The square root of 861481201 is 29351.

It is a perfect power (a square), and thus also a powerful number.

861481201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861481201 - 2³ = 861481193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861481207) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1437900 + ... + 1438498.

Almost surely, 2^861481201 is an apocalyptic number.

861481201 is the 29351-st square number.

861481201 is the 14676-th centered octagonal number.

It is an amenable number.

861481201 is a deficient number, since it is larger than the sum of its proper divisors (145201000).

861481201 is an frugal number, since it uses more digits than its factorization.

861481201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The cubic root of 861481201 is about 951.5141876824.

The spelling of 861481201 in words is "eight hundred sixty-one million, four hundred eighty-one thousand, two hundred one".