55348561 has 2 divisors, whose sum is σ = 55348562. Its totient is φ = 55348560.

The previous prime is 55348537. The next prime is 55348619. The reversal of 55348561 is 16584355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52475536 + 2873025 = 7244^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 55348561 - 2⁹ = 55348049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55348561.

It is not a weakly prime, because it can be changed into another prime (55348061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27674280 + 27674281.

It is an arithmetic number, because the mean of its divisors is an integer number (27674281).

Almost surely, 2^55348561 is an apocalyptic number.

It is an amenable number.

55348561 is a deficient number, since it is larger than the sum of its proper divisors (1).

55348561 is an equidigital number, since it uses as much as digits as its factorization.

55348561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 55348561 is about 7439.6613498196. The cubic root of 55348561 is about 381.0969251640.

The spelling of 55348561 in words is "fifty-five million, three hundred forty-eight thousand, five hundred sixty-one".