1380550521 has 16 divisors (see below), whose sum is σ = 2104227200. Its totient is φ = 788686848.

The previous prime is 1380550513. The next prime is 1380550543. The reversal of 1380550521 is 1250550831.

It is not a de Polignac number, because 1380550521 - 2³ = 1380550513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380550021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132075 + ... + 142143.

It is an arithmetic number, because the mean of its divisors is an integer number (131514200).

Almost surely, 2^1380550521 is an apocalyptic number.

It is an amenable number.

1380550521 is a deficient number, since it is larger than the sum of its proper divisors (723676679).

1380550521 is a wasteful number, since it uses less digits than its factorization.

1380550521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16608.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1380550521 is about 37155.7602667473. The cubic root of 1380550521 is about 1113.4843089408.

The spelling of 1380550521 in words is "one billion, three hundred eighty million, five hundred fifty thousand, five hundred twenty-one".