61244993 has 2 divisors, whose sum is σ = 61244994. Its totient is φ = 61244992.

The previous prime is 61244959. The next prime is 61245001. The reversal of 61244993 is 39944216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59089969 + 2155024 = 7687^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 61244993 - 2¹² = 61240897 is a prime.

It is not a weakly prime, because it can be changed into another prime (61244903) 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, 30622496 + 30622497.

It is an arithmetic number, because the mean of its divisors is an integer number (30622497).

Almost surely, 2^61244993 is an apocalyptic number.

It is an amenable number.

61244993 is a deficient number, since it is larger than the sum of its proper divisors (1).

61244993 is an equidigital number, since it uses as much as digits as its factorization.

61244993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 61244993 is about 7825.9180292155. The cubic root of 61244993 is about 394.1760166756.

The spelling of 61244993 in words is "sixty-one million, two hundred forty-four thousand, nine hundred ninety-three".