1553317161 has 8 divisors (see below), whose sum is σ = 2259370464. Its totient is φ = 941404320.

The previous prime is 1553317153. The next prime is 1553317177. The reversal of 1553317161 is 1617133551.

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

It is not a de Polignac number, because 1553317161 - 2³ = 1553317153 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 47070217 = 1553317161 / (1 + 5 + 5 + 3 + 3 + 1 + 7 + 1 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (1553317261) 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 7 ways as a sum of consecutive naturals, for example, 23535076 + ... + 23535141.

It is an arithmetic number, because the mean of its divisors is an integer number (282421308).

Almost surely, 2^1553317161 is an apocalyptic number.

1553317161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1553317161 is a deficient number, since it is larger than the sum of its proper divisors (706053303).

1553317161 is a wasteful number, since it uses less digits than its factorization.

1553317161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47070231.

The product of its digits is 9450, while the sum is 33.

The square root of 1553317161 is about 39412.1448414064. The cubic root of 1553317161 is about 1158.1195158546.

The spelling of 1553317161 in words is "one billion, five hundred fifty-three million, three hundred seventeen thousand, one hundred sixty-one".