55905313 has 2 divisors, whose sum is σ = 55905314. Its totient is φ = 55905312.

The previous prime is 55905287. The next prime is 55905323. The reversal of 55905313 is 31350955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55830784 + 74529 = 7472^2 + 273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55905313 is a prime.

It is not a weakly prime, because it can be changed into another prime (55905323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27952656 + 27952657.

It is an arithmetic number, because the mean of its divisors is an integer number (27952657).

Almost surely, 2^55905313 is an apocalyptic number.

It is an amenable number.

55905313 is a deficient number, since it is larger than the sum of its proper divisors (1).

55905313 is an equidigital number, since it uses as much as digits as its factorization.

55905313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 55905313 is about 7476.9855556902. The cubic root of 55905313 is about 382.3704842950.

The spelling of 55905313 in words is "fifty-five million, nine hundred five thousand, three hundred thirteen".