61890041 has 2 divisors, whose sum is σ = 61890042. Its totient is φ = 61890040.

The previous prime is 61890007. The next prime is 61890053. The reversal of 61890041 is 14009816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48720400 + 13169641 = 6980^2 + 3629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61890041 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61889986 and 61890013.

It is not a weakly prime, because it can be changed into another prime (61890001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30945020 + 30945021.

It is an arithmetic number, because the mean of its divisors is an integer number (30945021).

Almost surely, 2^61890041 is an apocalyptic number.

It is an amenable number.

61890041 is a deficient number, since it is larger than the sum of its proper divisors (1).

61890041 is an equidigital number, since it uses as much as digits as its factorization.

61890041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 61890041 is about 7867.0223719016. The cubic root of 61890041 is about 395.5550408922. Note that the first 3 decimals are identical.

Adding to 61890041 its reverse (14009816), we get a palindrome (75899857).

The spelling of 61890041 in words is "sixty-one million, eight hundred ninety thousand, forty-one".