55903223 has 2 divisors, whose sum is σ = 55903224. Its totient is φ = 55903222.

The previous prime is 55903219. The next prime is 55903249. The reversal of 55903223 is 32230955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55903223 - 2² = 55903219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55903273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27951611 + 27951612.

It is an arithmetic number, because the mean of its divisors is an integer number (27951612).

Almost surely, 2^55903223 is an apocalyptic number.

55903223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55903223 is an equidigital number, since it uses as much as digits as its factorization.

55903223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 55903223 is about 7476.8457921773. The cubic root of 55903223 is about 382.3657193080.

The spelling of 55903223 in words is "fifty-five million, nine hundred three thousand, two hundred twenty-three".