55915073 has 2 divisors, whose sum is σ = 55915074. Its totient is φ = 55915072.

The previous prime is 55915033. The next prime is 55915087. The reversal of 55915073 is 37051955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51724864 + 4190209 = 7192^2 + 2047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55915073 is a prime.

It is not a weakly prime, because it can be changed into another prime (55915033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27957536 + 27957537.

It is an arithmetic number, because the mean of its divisors is an integer number (27957537).

Almost surely, 2^55915073 is an apocalyptic number.

It is an amenable number.

55915073 is a deficient number, since it is larger than the sum of its proper divisors (1).

55915073 is an equidigital number, since it uses as much as digits as its factorization.

55915073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 55915073 is about 7477.6381966501. The cubic root of 55915073 is about 382.3927345283.

The spelling of 55915073 in words is "fifty-five million, nine hundred fifteen thousand, seventy-three".