61530166 has 16 divisors (see below), whose sum is σ = 93212784. Its totient is φ = 30461184.

The previous prime is 61530127. The next prime is 61530179. The reversal of 61530166 is 66103516.

61530166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61530166² = 7571922655975112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 141886 + ... + 142318.

It is an arithmetic number, because the mean of its divisors is an integer number (5825799).

Almost surely, 2^61530166 is an apocalyptic number.

61530166 is a deficient number, since it is larger than the sum of its proper divisors (31682618).

61530166 is a wasteful number, since it uses less digits than its factorization.

61530166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 61530166 is about 7844.1166488012. The cubic root of 61530166 is about 394.7868657365.

The spelling of 61530166 in words is "sixty-one million, five hundred thirty thousand, one hundred sixty-six".