61355141 has 2 divisors, whose sum is σ = 61355142. Its totient is φ = 61355140.

The previous prime is 61355131. The next prime is 61355179. The reversal of 61355141 is 14155316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52504516 + 8850625 = 7246^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 61355141 - 2¹⁴ = 61338757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61355141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61355131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30677570 + 30677571.

It is an arithmetic number, because the mean of its divisors is an integer number (30677571).

Almost surely, 2^61355141 is an apocalyptic number.

It is an amenable number.

61355141 is a deficient number, since it is larger than the sum of its proper divisors (1).

61355141 is an equidigital number, since it uses as much as digits as its factorization.

61355141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 26.

The square root of 61355141 is about 7832.9522531419. The cubic root of 61355141 is about 394.4121812723.

The spelling of 61355141 in words is "sixty-one million, three hundred fifty-five thousand, one hundred forty-one".