1105403551 has 4 divisors (see below), whose sum is σ = 1263318352. Its totient is φ = 947488752.

The previous prime is 1105403531. The next prime is 1105403557. The reversal of 1105403551 is 1553045011.

It is a happy number.

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

It is not a de Polignac number, because 1105403551 - 2⁷ = 1105403423 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 (1105403557) by changing a digit.

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, 78957390 + ... + 78957403.

It is an arithmetic number, because the mean of its divisors is an integer number (315829588).

Almost surely, 2^1105403551 is an apocalyptic number.

1105403551 is a deficient number, since it is larger than the sum of its proper divisors (157914801).

1105403551 is an equidigital number, since it uses as much as digits as its factorization.

1105403551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157914800.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1105403551 is about 33247.6097035561. The cubic root of 1105403551 is about 1033.9676516661.

Adding to 1105403551 its reverse (1553045011), we get a palindrome (2658448562).

The spelling of 1105403551 in words is "one billion, one hundred five million, four hundred three thousand, five hundred fifty-one".