61189506 has 40 divisors (see below), whose sum is σ = 156699840. Its totient is φ = 17482392.

The previous prime is 61189483. The next prime is 61189523. The reversal of 61189506 is 60598116.

61189506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 19 ways as a sum of consecutive naturals, for example, 25846 + ... + 28113.

It is an arithmetic number, because the mean of its divisors is an integer number (3917496).

Almost surely, 2^61189506 is an apocalyptic number.

61189506 is an abundant number, since it is smaller than the sum of its proper divisors (95510334).

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

61189506 is a wasteful number, since it uses less digits than its factorization.

61189506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53980 (or 53971 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 61189506 is about 7822.3721466062. The cubic root of 61189506 is about 394.0569416187.

The spelling of 61189506 in words is "sixty-one million, one hundred eighty-nine thousand, five hundred six".