55660259 has 2 divisors, whose sum is σ = 55660260. Its totient is φ = 55660258.

The previous prime is 55660219. The next prime is 55660271. The reversal of 55660259 is 95206655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55660259 - 2¹⁶ = 55594723 is a prime.

It is not a weakly prime, because it can be changed into another prime (55660219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27830129 + 27830130.

It is an arithmetic number, because the mean of its divisors is an integer number (27830130).

Almost surely, 2^55660259 is an apocalyptic number.

55660259 is a deficient number, since it is larger than the sum of its proper divisors (1).

55660259 is an equidigital number, since it uses as much as digits as its factorization.

55660259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 55660259 is about 7460.5803393570. The cubic root of 55660259 is about 381.8109747987.

The spelling of 55660259 in words is "fifty-five million, six hundred sixty thousand, two hundred fifty-nine".