1380051 has 16 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 906984.

The previous prime is 1380047. The next prime is 1380053. The reversal of 1380051 is 1500831.

It is a happy number.

It is not a de Polignac number, because 1380051 - 2² = 1380047 is a prime.

1380051 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1380053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1810 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2^1380051 is an apocalyptic number.

1380051 is a deficient number, since it is larger than the sum of its proper divisors (693549).

1380051 is an equidigital number, since it uses as much as digits as its factorization.

1380051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1380051 is about 1174.7557192881. The cubic root of 1380051 is about 111.3349996364.

Adding to 1380051 its reverse (1500831), we get a palindrome (2880882).

The spelling of 1380051 in words is "one million, three hundred eighty thousand, fifty-one".