103261555 has 4 divisors (see below), whose sum is σ = 123913872. Its totient is φ = 82609240.

The previous prime is 103261549. The next prime is 103261573. The reversal of 103261555 is 555162301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555162301 = 6991 ⋅79411.

It is not a de Polignac number, because 103261555 - 2¹⁵ = 103228787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10326151 + ... + 10326160.

It is an arithmetic number, because the mean of its divisors is an integer number (30978468).

Almost surely, 2^103261555 is an apocalyptic number.

103261555 is a deficient number, since it is larger than the sum of its proper divisors (20652317).

103261555 is an equidigital number, since it uses as much as digits as its factorization.

103261555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20652316.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 103261555 is about 10161.7692849228. The cubic root of 103261555 is about 469.1512598522.

It can be divided in two parts, 10326 and 1555, that added together give a square (11881 = 109²).

The spelling of 103261555 in words is "one hundred three million, two hundred sixty-one thousand, five hundred fifty-five".