1103402555 has 4 divisors (see below), whose sum is σ = 1324083072. Its totient is φ = 882722040.

The previous prime is 1103402539. The next prime is 1103402557. The reversal of 1103402555 is 5552043011.

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

It is not a de Polignac number, because 1103402555 - 2⁴ = 1103402539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103402557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110340251 + ... + 110340260.

It is an arithmetic number, because the mean of its divisors is an integer number (331020768).

Almost surely, 2^1103402555 is an apocalyptic number.

1103402555 is a deficient number, since it is larger than the sum of its proper divisors (220680517).

1103402555 is an equidigital number, since it uses as much as digits as its factorization.

1103402555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220680516.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1103402555 is about 33217.5037442611. The cubic root of 1103402555 is about 1033.3433804665.

Adding to 1103402555 its reverse (5552043011), we get a palindrome (6655445566).

The spelling of 1103402555 in words is "one billion, one hundred three million, four hundred two thousand, five hundred fifty-five".