55561741 has 2 divisors, whose sum is σ = 55561742. Its totient is φ = 55561740.

The previous prime is 55561733. The next prime is 55561747. The reversal of 55561741 is 14716555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 2941225 = 7254^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 55561741 - 2³ = 55561733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55561697 and 55561706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55561747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780870 + 27780871.

It is an arithmetic number, because the mean of its divisors is an integer number (27780871).

Almost surely, 2^55561741 is an apocalyptic number.

It is an amenable number.

55561741 is a deficient number, since it is larger than the sum of its proper divisors (1).

55561741 is an equidigital number, since it uses as much as digits as its factorization.

55561741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 34.

The square root of 55561741 is about 7453.9748456780. The cubic root of 55561741 is about 381.5855747916.

The spelling of 55561741 in words is "fifty-five million, five hundred sixty-one thousand, seven hundred forty-one".