1255455 has 24 divisors (see below), whose sum is σ = 2272608. Its totient is φ = 639936.

The previous prime is 1255453. The next prime is 1255477. The reversal of 1255455 is 5545521.

It is not a de Polignac number, because 1255455 - 2¹ = 1255453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (94692).

2^1255455 is an apocalyptic number.

1255455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255455 is a deficient number, since it is larger than the sum of its proper divisors (1017153).

1255455 is a wasteful number, since it uses less digits than its factorization.

1255455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1244 counting only the distinct ones).

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

The square root of 1255455 is about 1120.4708831558. The cubic root of 1255455 is about 107.8782063240.

The spelling of 1255455 in words is "one million, two hundred fifty-five thousand, four hundred fifty-five".