55598243 has 2 divisors, whose sum is σ = 55598244. Its totient is φ = 55598242.

The previous prime is 55598209. The next prime is 55598273. The reversal of 55598243 is 34289555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55598243 - 2⁸ = 55597987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55598243.

It is not a weakly prime, because it can be changed into another prime (55598203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27799121 + 27799122.

It is an arithmetic number, because the mean of its divisors is an integer number (27799122).

Almost surely, 2^55598243 is an apocalyptic number.

55598243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55598243 is an equidigital number, since it uses as much as digits as its factorization.

55598243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 41.

The square root of 55598243 is about 7456.4229359660. The cubic root of 55598243 is about 381.6691190154.

The spelling of 55598243 in words is "fifty-five million, five hundred ninety-eight thousand, two hundred forty-three".