1255490 has 16 divisors (see below), whose sum is σ = 2274048. Its totient is φ = 499056.

The previous prime is 1255477. The next prime is 1255519. The reversal of 1255490 is 945521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (142128).

2^1255490 is an apocalyptic number.

1255490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255490 is a deficient number, since it is larger than the sum of its proper divisors (1018558).

1255490 is a wasteful number, since it uses less digits than its factorization.

1255490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1255490 is about 1120.4865014805. The cubic root of 1255490 is about 107.8792088030.

The spelling of 1255490 in words is "one million, two hundred fifty-five thousand, four hundred ninety".