1385553 has 8 divisors (see below), whose sum is σ = 1989568. Its totient is φ = 852624.

The previous prime is 1385521. The next prime is 1385561. The reversal of 1385553 is 3555831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1385553 - 2⁵ = 1385521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1385553.

It is not an unprimeable number, because it can be changed into a prime (1385563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17725 + ... + 17802.

It is an arithmetic number, because the mean of its divisors is an integer number (248696).

2^1385553 is an apocalyptic number.

1385553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1385553 is a deficient number, since it is larger than the sum of its proper divisors (604015).

1385553 is a wasteful number, since it uses less digits than its factorization.

1385553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35543.

The product of its digits is 9000, while the sum is 30.

The square root of 1385553 is about 1177.0951533330. The cubic root of 1385553 is about 111.4827605781.

The spelling of 1385553 in words is "one million, three hundred eighty-five thousand, five hundred fifty-three".