103555389 has 8 divisors (see below), whose sum is σ = 157798720. Its totient is φ = 59174496.

The previous prime is 103555363. The next prime is 103555393. The reversal of 103555389 is 983555301.

It is a happy number.

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

It is not a de Polignac number, because 103555389 - 2⁷ = 103555261 is a prime.

It is a super-3 number, since 3×103555389³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103555189) 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, 2465584 + ... + 2465625.

It is an arithmetic number, because the mean of its divisors is an integer number (19724840).

Almost surely, 2^103555389 is an apocalyptic number.

It is an amenable number.

103555389 is a deficient number, since it is larger than the sum of its proper divisors (54243331).

103555389 is an equidigital number, since it uses as much as digits as its factorization.

103555389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931219.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 103555389 is about 10176.2168314163. The cubic root of 103555389 is about 469.5958333205.

The spelling of 103555389 in words is "one hundred three million, five hundred fifty-five thousand, three hundred eighty-nine".