61582141 has 2 divisors, whose sum is σ = 61582142. Its totient is φ = 61582140.

The previous prime is 61582127. The next prime is 61582163. The reversal of 61582141 is 14128516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 18404100 = 6571^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 61582141 - 2¹⁵ = 61549373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61582111) 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, 30791070 + 30791071.

It is an arithmetic number, because the mean of its divisors is an integer number (30791071).

Almost surely, 2^61582141 is an apocalyptic number.

It is an amenable number.

61582141 is a deficient number, since it is larger than the sum of its proper divisors (1).

61582141 is an equidigital number, since it uses as much as digits as its factorization.

61582141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 28.

The square root of 61582141 is about 7847.4289420166. The cubic root of 61582141 is about 394.8979942764.

The spelling of 61582141 in words is "sixty-one million, five hundred eighty-two thousand, one hundred forty-one".