61944461 has 2 divisors, whose sum is σ = 61944462. Its totient is φ = 61944460.

The previous prime is 61944457. The next prime is 61944473. The reversal of 61944461 is 16444916.

It is a happy number.

61944461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57078025 + 4866436 = 7555^2 + 2206^2 .

It is a cyclic number.

It is not a de Polignac number, because 61944461 - 2² = 61944457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61944431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30972230 + 30972231.

It is an arithmetic number, because the mean of its divisors is an integer number (30972231).

Almost surely, 2^61944461 is an apocalyptic number.

It is an amenable number.

61944461 is a deficient number, since it is larger than the sum of its proper divisors (1).

61944461 is an equidigital number, since it uses as much as digits as its factorization.

61944461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 61944461 is about 7870.4803538285. The cubic root of 61944461 is about 395.6709442952.

The spelling of 61944461 in words is "sixty-one million, nine hundred forty-four thousand, four hundred sixty-one".