61530160 has 40 divisors (see below), whose sum is σ = 143740800. Its totient is φ = 24494592.

The previous prime is 61530127. The next prime is 61530179. The reversal of 61530160 is 6103516.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16116 + ... + 19564.

It is an arithmetic number, because the mean of its divisors is an integer number (3593520).

Almost surely, 2^61530160 is an apocalyptic number.

It is an amenable number.

61530160 is an abundant number, since it is smaller than the sum of its proper divisors (82210640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61530160 is a wasteful number, since it uses less digits than its factorization.

61530160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685 (or 3679 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 61530160 is about 7844.1162663489. The cubic root of 61530160 is about 394.7868529042.

Adding to 61530160 its reverse (6103516), we get a palindrome (67633676).

The spelling of 61530160 in words is "sixty-one million, five hundred thirty thousand, one hundred sixty".