1255545 has 12 divisors (see below), whose sum is σ = 2176356. Its totient is φ = 669600.

The previous prime is 1255519. The next prime is 1255549. The reversal of 1255545 is 5455521.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 423801 = 912^2 + 651^2 .

It is not a de Polignac number, because 1255545 - 2¹⁵ = 1222777 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1255549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13906 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (181363).

2^1255545 is an apocalyptic number.

1255545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255545 is a deficient number, since it is larger than the sum of its proper divisors (920811).

1255545 is a wasteful number, since it uses less digits than its factorization.

1255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27912 (or 27909 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 1255545 is about 1120.5110441223. The cubic root of 1255545 is about 107.8807840897.

The spelling of 1255545 in words is "one million, two hundred fifty-five thousand, five hundred forty-five".