1103420551 has 4 divisors (see below), whose sum is σ = 1126897632. Its totient is φ = 1079943472.

The previous prime is 1103420519. The next prime is 1103420569. The reversal of 1103420551 is 1550243011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1103420551 - 2⁵ = 1103420519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103420501) 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, 11738470 + ... + 11738563.

It is an arithmetic number, because the mean of its divisors is an integer number (281724408).

Almost surely, 2^1103420551 is an apocalyptic number.

1103420551 is a deficient number, since it is larger than the sum of its proper divisors (23477081).

1103420551 is an equidigital number, since it uses as much as digits as its factorization.

1103420551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23477080.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1103420551 is about 33217.7746244386. The cubic root of 1103420551 is about 1033.3489982248.

Adding to 1103420551 its reverse (1550243011), we get a palindrome (2653663562).

The spelling of 1103420551 in words is "one billion, one hundred three million, four hundred twenty thousand, five hundred fifty-one".