55573361 has 2 divisors, whose sum is σ = 55573362. Its totient is φ = 55573360.

The previous prime is 55573321. The next prime is 55573363. The reversal of 55573361 is 16337555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 516961 = 7420^2 + 719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55573361 is a prime.

It is a Sophie Germain prime.

Together with 55573363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55573363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27786680 + 27786681.

It is an arithmetic number, because the mean of its divisors is an integer number (27786681).

Almost surely, 2^55573361 is an apocalyptic number.

It is an amenable number.

55573361 is a deficient number, since it is larger than the sum of its proper divisors (1).

55573361 is an equidigital number, since it uses as much as digits as its factorization.

55573361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 35.

The square root of 55573361 is about 7454.7542548363. The cubic root of 55573361 is about 381.6121741220.

The spelling of 55573361 in words is "fifty-five million, five hundred seventy-three thousand, three hundred sixty-one".