1491255 has 24 divisors (see below), whose sum is σ = 2670720. Its totient is φ = 768960.

The previous prime is 1491247. The next prime is 1491271. The reversal of 1491255 is 5521941.

It is not a de Polignac number, because 1491255 - 2³ = 1491247 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 861 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (111280).

2^1491255 is an apocalyptic number.

1491255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1491255 is a deficient number, since it is larger than the sum of its proper divisors (1179465).

1491255 is a wasteful number, since it uses less digits than its factorization.

1491255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1108 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1491255 is about 1221.1695214015. The cubic root of 1491255 is about 114.2485344088.

The spelling of 1491255 in words is "one million, four hundred ninety-one thousand, two hundred fifty-five".