61854841 has 4 divisors (see below), whose sum is σ = 61936884. Its totient is φ = 61772800.

The previous prime is 61854839. The next prime is 61854853. The reversal of 61854841 is 14845816.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27092025 + 34762816 = 5205^2 + 5896^2 .

It is a cyclic number.

It is not a de Polignac number, because 61854841 - 2¹ = 61854839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61854841.

It is not an unprimeable number, because it can be changed into a prime (61854811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39880 + ... + 41401.

It is an arithmetic number, because the mean of its divisors is an integer number (15484221).

Almost surely, 2^61854841 is an apocalyptic number.

It is an amenable number.

61854841 is a deficient number, since it is larger than the sum of its proper divisors (82043).

61854841 is an equidigital number, since it uses as much as digits as its factorization.

61854841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82042.

The product of its digits is 30720, while the sum is 37.

The square root of 61854841 is about 7864.7848667335. The cubic root of 61854841 is about 395.4800359440.

It can be divided in two parts, 6185 and 4841, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 61854841 in words is "sixty-one million, eight hundred fifty-four thousand, eight hundred forty-one".