55512761 has 2 divisors, whose sum is σ = 55512762. Its totient is φ = 55512760.

The previous prime is 55512749. The next prime is 55512797. The reversal of 55512761 is 16721555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 5669161 = 7060^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 55512761 - 2¹⁰ = 55511737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55512161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756380 + 27756381.

It is an arithmetic number, because the mean of its divisors is an integer number (27756381).

Almost surely, 2^55512761 is an apocalyptic number.

It is an amenable number.

55512761 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512761 is an equidigital number, since it uses as much as digits as its factorization.

55512761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 32.

The square root of 55512761 is about 7450.6886258922. The cubic root of 55512761 is about 381.4734139424.

The spelling of 55512761 in words is "fifty-five million, five hundred twelve thousand, seven hundred sixty-one".