1355121173 has 8 divisors (see below), whose sum is σ = 1630221120. Its totient is φ = 1100399040.

The previous prime is 1355121167. The next prime is 1355121179. The reversal of 1355121173 is 3711215531.

It is an interprime number because it is at equal distance from previous prime (1355121167) and next prime (1355121179).

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 1355121173 - 2⁶ = 1355121109 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 (1355121179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5094308 + ... + 5094573.

It is an arithmetic number, because the mean of its divisors is an integer number (203777640).

Almost surely, 2^1355121173 is an apocalyptic number.

It is an amenable number.

1355121173 is a deficient number, since it is larger than the sum of its proper divisors (275099947).

1355121173 is a wasteful number, since it uses less digits than its factorization.

1355121173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10188907.

The product of its digits is 3150, while the sum is 29.

The square root of 1355121173 is about 36811.9705123211. The cubic root of 1355121173 is about 1106.6052093155.

The spelling of 1355121173 in words is "one billion, three hundred fifty-five million, one hundred twenty-one thousand, one hundred seventy-three".