2555523 has 8 divisors (see below), whose sum is σ = 3786000. Its totient is φ = 1703664.

The previous prime is 2555521. The next prime is 2555543. The reversal of 2555523 is 3255552.

It is not a de Polignac number, because 2555523 - 2¹ = 2555521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94649 = 2555523 / (2 + 5 + 5 + 5 + 5 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (2555521) 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 in 7 ways as a sum of consecutive naturals, for example, 47298 + ... + 47351.

It is an arithmetic number, because the mean of its divisors is an integer number (473250).

2^2555523 is an apocalyptic number.

2555523 is a deficient number, since it is larger than the sum of its proper divisors (1230477).

2555523 is an equidigital number, since it uses as much as digits as its factorization.

2555523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94658 (or 94652 counting only the distinct ones).

The product of its digits is 7500, while the sum is 27.

The square root of 2555523 is about 1598.6003252846. The cubic root of 2555523 is about 136.7182837611.

2555523 divided by its sum of digits (27) gives a palindrome (94649).

It can be divided in two parts, 255 and 5523, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 2555523 in words is "two million, five hundred fifty-five thousand, five hundred twenty-three".