55725223 has 2 divisors, whose sum is σ = 55725224. Its totient is φ = 55725222.

The previous prime is 55725217. The next prime is 55725227. The reversal of 55725223 is 32252755.

55725223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55725223 is a prime.

It is equal to p_3322894 and since 55725223 and 3322894 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55725227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27862611 + 27862612.

It is an arithmetic number, because the mean of its divisors is an integer number (27862612).

Almost surely, 2^55725223 is an apocalyptic number.

55725223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55725223 is an equidigital number, since it uses as much as digits as its factorization.

55725223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 31.

The square root of 55725223 is about 7464.9328865034. The cubic root of 55725223 is about 381.9594608991.

Adding to 55725223 its reverse (32252755), we get a palindrome (87977978).

The spelling of 55725223 in words is "fifty-five million, seven hundred twenty-five thousand, two hundred twenty-three".