61941155 has 4 divisors (see below), whose sum is σ = 74329392. Its totient is φ = 49552920.

The previous prime is 61941151. The next prime is 61941161. The reversal of 61941155 is 55114916.

61941155 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 not a de Polignac number, because 61941155 - 2² = 61941151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61941151) 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 3 ways as a sum of consecutive naturals, for example, 6194111 + ... + 6194120.

It is an arithmetic number, because the mean of its divisors is an integer number (18582348).

Almost surely, 2^61941155 is an apocalyptic number.

61941155 is a deficient number, since it is larger than the sum of its proper divisors (12388237).

61941155 is a wasteful number, since it uses less digits than its factorization.

61941155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12388236.

The product of its digits is 5400, while the sum is 32.

The square root of 61941155 is about 7870.2703257258. The cubic root of 61941155 is about 395.6639051325.

The spelling of 61941155 in words is "sixty-one million, nine hundred forty-one thousand, one hundred fifty-five".