61858141 has 2 divisors, whose sum is σ = 61858142. Its totient is φ = 61858140.

The previous prime is 61858133. The next prime is 61858163. The reversal of 61858141 is 14185816.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 14661241 = 6870^2 + 3829^2 .

It is a cyclic number.

It is not a de Polignac number, because 61858141 - 2³ = 61858133 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61858097 and 61858106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61858241) 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 as a sum of consecutive naturals, namely, 30929070 + 30929071.

It is an arithmetic number, because the mean of its divisors is an integer number (30929071).

Almost surely, 2^61858141 is an apocalyptic number.

It is an amenable number.

61858141 is a deficient number, since it is larger than the sum of its proper divisors (1).

61858141 is an equidigital number, since it uses as much as digits as its factorization.

61858141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 34.

The square root of 61858141 is about 7864.9946598838. The cubic root of 61858141 is about 395.4870688665.

The spelling of 61858141 in words is "sixty-one million, eight hundred fifty-eight thousand, one hundred forty-one".