55551593 has 2 divisors, whose sum is σ = 55551594. Its totient is φ = 55551592.

The previous prime is 55551583. The next prime is 55551599. The reversal of 55551593 is 39515555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 316969 = 7432^2 + 563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55551593 is a prime.

It is not a weakly prime, because it can be changed into another prime (55551599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775796 + 27775797.

It is an arithmetic number, because the mean of its divisors is an integer number (27775797).

Almost surely, 2^55551593 is an apocalyptic number.

It is an amenable number.

55551593 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551593 is an equidigital number, since it uses as much as digits as its factorization.

55551593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84375, while the sum is 38.

The square root of 55551593 is about 7453.2941039516. The cubic root of 55551593 is about 381.5623419812.

The spelling of 55551593 in words is "fifty-five million, five hundred fifty-one thousand, five hundred ninety-three".