161035553 has 8 divisors (see below), whose sum is σ = 184556160. Its totient is φ = 137643840.

The previous prime is 161035513. The next prime is 161035573. The reversal of 161035553 is 355530161.

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 161035553 - 2¹⁴ = 161019169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161035513) 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, 29528 + ... + 34553.

It is an arithmetic number, because the mean of its divisors is an integer number (23069520).

Almost surely, 2^161035553 is an apocalyptic number.

It is an amenable number.

161035553 is a deficient number, since it is larger than the sum of its proper divisors (23520607).

161035553 is an equidigital number, since it uses as much as digits as its factorization.

161035553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64447.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 161035553 is about 12689.9784475782. The cubic root of 161035553 is about 544.0522236214.

The spelling of 161035553 in words is "one hundred sixty-one million, thirty-five thousand, five hundred fifty-three".