61085158 has 4 divisors (see below), whose sum is σ = 91627740. Its totient is φ = 30542578.

The previous prime is 61085153. The next prime is 61085161. The reversal of 61085158 is 85158016.

61085158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61085153) 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 as a sum of consecutive naturals, namely, 15271288 + ... + 15271291.

It is an arithmetic number, because the mean of its divisors is an integer number (22906935).

Almost surely, 2^61085158 is an apocalyptic number.

61085158 is a deficient number, since it is larger than the sum of its proper divisors (30542582).

61085158 is a wasteful number, since it uses less digits than its factorization.

61085158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30542581.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 61085158 is about 7815.6994568625. The cubic root of 61085158 is about 393.8328157710.

The spelling of 61085158 in words is "sixty-one million, eighty-five thousand, one hundred fifty-eight".