55290793 has 2 divisors, whose sum is σ = 55290794. Its totient is φ = 55290792.

The previous prime is 55290769. The next prime is 55290797. The reversal of 55290793 is 39709255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 56169 = 7432^2 + 237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55290793 is a prime.

It is not a weakly prime, because it can be changed into another prime (55290797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27645396 + 27645397.

It is an arithmetic number, because the mean of its divisors is an integer number (27645397).

Almost surely, 2^55290793 is an apocalyptic number.

It is an amenable number.

55290793 is a deficient number, since it is larger than the sum of its proper divisors (1).

55290793 is an equidigital number, since it uses as much as digits as its factorization.

55290793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 55290793 is about 7435.7779014707. Note that the first 3 decimals coincide. The cubic root of 55290793 is about 380.9642937676.

The spelling of 55290793 in words is "fifty-five million, two hundred ninety thousand, seven hundred ninety-three".