61042493 has 2 divisors, whose sum is σ = 61042494. Its totient is φ = 61042492.

The previous prime is 61042439. The next prime is 61042523. The reversal of 61042493 is 39424016.

Together with previous prime (61042439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34550884 + 26491609 = 5878^2 + 5147^2 .

It is a cyclic number.

It is not a de Polignac number, because 61042493 - 2²⁰ = 59993917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61042693) 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, 30521246 + 30521247.

It is an arithmetic number, because the mean of its divisors is an integer number (30521247).

Almost surely, 2^61042493 is an apocalyptic number.

It is an amenable number.

61042493 is a deficient number, since it is larger than the sum of its proper divisors (1).

61042493 is an equidigital number, since it uses as much as digits as its factorization.

61042493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 61042493 is about 7812.9695378902. The cubic root of 61042493 is about 393.7411034187.

The spelling of 61042493 in words is "sixty-one million, forty-two thousand, four hundred ninety-three".