161455033 has 4 divisors (see below), whose sum is σ = 162616720. Its totient is φ = 160293348.

The previous prime is 161454991. The next prime is 161455043. The reversal of 161455033 is 330554161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161455033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161454992 and 161455010.

It is not an unprimeable number, because it can be changed into a prime (161455043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580635 + ... + 580912.

It is an arithmetic number, because the mean of its divisors is an integer number (40654180).

Almost surely, 2^161455033 is an apocalyptic number.

It is an amenable number.

161455033 is a deficient number, since it is larger than the sum of its proper divisors (1161687).

161455033 is a wasteful number, since it uses less digits than its factorization.

161455033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161686.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 161455033 is about 12706.4957010184. The cubic root of 161455033 is about 544.5242128746.

The spelling of 161455033 in words is "one hundred sixty-one million, four hundred fifty-five thousand, thirty-three".