61530201 has 12 divisors (see below), whose sum is σ = 88957440. Its totient is φ = 40983000.

The previous prime is 61530197. The next prime is 61530241. The reversal of 61530201 is 10203516.

61530201 is a `hidden beast` number, since 615 + 30 + 20 + 1 = 666.

61530201 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 61530201 - 2² = 61530197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61530241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10576 + ... + 15326.

It is an arithmetic number, because the mean of its divisors is an integer number (7413120).

Almost surely, 2^61530201 is an apocalyptic number.

It is an amenable number.

61530201 is a deficient number, since it is larger than the sum of its proper divisors (27427239).

61530201 is a wasteful number, since it uses less digits than its factorization.

61530201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6196 (or 6193 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 61530201 is about 7844.1188797723. The cubic root of 61530201 is about 394.7869405916.

Adding to 61530201 its reverse (10203516), we get a palindrome (71733717).

The spelling of 61530201 in words is "sixty-one million, five hundred thirty thousand, two hundred one".