55575523 has 2 divisors, whose sum is σ = 55575524. Its totient is φ = 55575522.

The previous prime is 55575511. The next prime is 55575563. The reversal of 55575523 is 32557555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55575523 - 2⁵ = 55575491 is a prime.

It is not a weakly prime, because it can be changed into another prime (55575563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27787761 + 27787762.

It is an arithmetic number, because the mean of its divisors is an integer number (27787762).

Almost surely, 2^55575523 is an apocalyptic number.

55575523 is a deficient number, since it is larger than the sum of its proper divisors (1).

55575523 is an equidigital number, since it uses as much as digits as its factorization.

55575523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131250, while the sum is 37.

The square root of 55575523 is about 7454.8992615595. The cubic root of 55575523 is about 381.6171227449.

It can be divided in two parts, 5557552 and 3, that added together give a palindrome (5557555).

The spelling of 55575523 in words is "fifty-five million, five hundred seventy-five thousand, five hundred twenty-three".