1320550 has 60 divisors (see below), whose sum is σ = 3125916. Its totient is φ = 411600.

The previous prime is 1320541. The next prime is 1320607. The reversal of 1320550 is 550231.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 120045 + ... + 120055.

2^1320550 is an apocalyptic number.

1320550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320550 is an abundant number, since it is smaller than the sum of its proper divisors (1805366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320550 is an equidigital number, since it uses as much as digits as its factorization.

1320550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1320550 is about 1149.1518611567. The cubic root of 1320550 is about 109.7113645068.

Adding to 1320550 its reverse (550231), we get a palindrome (1870781).

The spelling of 1320550 in words is "one million, three hundred twenty thousand, five hundred fifty".