61103657 has 2 divisors, whose sum is σ = 61103658. Its totient is φ = 61103656.

The previous prime is 61103641. The next prime is 61103671. The reversal of 61103657 is 75630116.

61103657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60777616 + 326041 = 7796^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 61103657 - 2⁴ = 61103641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61103257) 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, 30551828 + 30551829.

It is an arithmetic number, because the mean of its divisors is an integer number (30551829).

Almost surely, 2^61103657 is an apocalyptic number.

It is an amenable number.

61103657 is a deficient number, since it is larger than the sum of its proper divisors (1).

61103657 is an equidigital number, since it uses as much as digits as its factorization.

61103657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 61103657 is about 7816.8828186177. The cubic root of 61103657 is about 393.8725678056.

The spelling of 61103657 in words is "sixty-one million, one hundred three thousand, six hundred fifty-seven".