55719361 has 2 divisors, whose sum is σ = 55719362. Its totient is φ = 55719360.

The previous prime is 55719359. The next prime is 55719371. The reversal of 55719361 is 16391755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30869136 + 24850225 = 5556^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 55719361 - 2¹ = 55719359 is a prime.

Together with 55719359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55719361.

It is not a weakly prime, because it can be changed into another prime (55719331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27859680 + 27859681.

It is an arithmetic number, because the mean of its divisors is an integer number (27859681).

Almost surely, 2^55719361 is an apocalyptic number.

It is an amenable number.

55719361 is a deficient number, since it is larger than the sum of its proper divisors (1).

55719361 is an equidigital number, since it uses as much as digits as its factorization.

55719361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 37.

The square root of 55719361 is about 7464.5402403631. The cubic root of 55719361 is about 381.9460670548.

The spelling of 55719361 in words is "fifty-five million, seven hundred nineteen thousand, three hundred sixty-one".