103513555 has 4 divisors (see below), whose sum is σ = 124216272. Its totient is φ = 82810840.

The previous prime is 103513549. The next prime is 103513567. The reversal of 103513555 is 555315301.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-103513555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10351351 + ... + 10351360.

It is an arithmetic number, because the mean of its divisors is an integer number (31054068).

Almost surely, 2^103513555 is an apocalyptic number.

103513555 is a deficient number, since it is larger than the sum of its proper divisors (20702717).

103513555 is an equidigital number, since it uses as much as digits as its factorization.

103513555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20702716.

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 103513555 is about 10174.1611447824. The cubic root of 103513555 is about 469.5325894911.

Adding to 103513555 its reverse (555315301), we get a palindrome (658828856).

The spelling of 103513555 in words is "one hundred three million, five hundred thirteen thousand, five hundred fifty-five".