61445401 has 2 divisors, whose sum is σ = 61445402. Its totient is φ = 61445400.

The previous prime is 61445393. The next prime is 61445413. The reversal of 61445401 is 10454416.

61445401 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., 33872400 + 27573001 = 5820^2 + 5251^2 .

It is a cyclic number.

It is not a de Polignac number, because 61445401 - 2³ = 61445393 is a prime.

It is not a weakly prime, because it can be changed into another prime (61445431) 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, 30722700 + 30722701.

It is an arithmetic number, because the mean of its divisors is an integer number (30722701).

Almost surely, 2^61445401 is an apocalyptic number.

It is an amenable number.

61445401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61445401 is an equidigital number, since it uses as much as digits as its factorization.

61445401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 61445401 is about 7838.7116926189. The cubic root of 61445401 is about 394.6054940640.

Adding to 61445401 its reverse (10454416), we get a palindrome (71899817).

The spelling of 61445401 in words is "sixty-one million, four hundred forty-five thousand, four hundred one".