55610257 has 2 divisors, whose sum is σ = 55610258. Its totient is φ = 55610256.

The previous prime is 55610239. The next prime is 55610263. The reversal of 55610257 is 75201655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31315216 + 24295041 = 5596^2 + 4929^2 .

It is a cyclic number.

It is not a de Polignac number, because 55610257 - 2¹¹ = 55608209 is a prime.

It is not a weakly prime, because it can be changed into another prime (55610267) 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, 27805128 + 27805129.

It is an arithmetic number, because the mean of its divisors is an integer number (27805129).

Almost surely, 2^55610257 is an apocalyptic number.

It is an amenable number.

55610257 is a deficient number, since it is larger than the sum of its proper divisors (1).

55610257 is an equidigital number, since it uses as much as digits as its factorization.

55610257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55610257 is about 7457.2285066236. The cubic root of 55610257 is about 381.6966081488.

The spelling of 55610257 in words is "fifty-five million, six hundred ten thousand, two hundred fifty-seven".