1553161103 has 8 divisors (see below), whose sum is σ = 1697600688. Its totient is φ = 1412288064.

The previous prime is 1553161097. The next prime is 1553161111. The reversal of 1553161103 is 3011613551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1553161103 - 2¹⁰ = 1553160079 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 (1553161193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890726 + ... + 892467.

It is an arithmetic number, because the mean of its divisors is an integer number (212200086).

Almost surely, 2^1553161103 is an apocalyptic number.

1553161103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1553161103 is a deficient number, since it is larger than the sum of its proper divisors (144439585).

1553161103 is a wasteful number, since it uses less digits than its factorization.

1553161103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783273.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 1553161103 is about 39410.1649704743. The cubic root of 1553161103 is about 1158.0807300714.

Adding to 1553161103 its reverse (3011613551), we get a palindrome (4564774654).

The spelling of 1553161103 in words is "one billion, five hundred fifty-three million, one hundred sixty-one thousand, one hundred three".