161533059 has 8 divisors (see below), whose sum is σ = 215447232. Its totient is φ = 107653800.

The previous prime is 161533039. The next prime is 161533081. The reversal of 161533059 is 950335161.

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

It is not a de Polignac number, because 161533059 - 2⁵ = 161533027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161533039) 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, 5284 + ... + 18734.

It is an arithmetic number, because the mean of its divisors is an integer number (26930904).

Almost surely, 2^161533059 is an apocalyptic number.

161533059 is a deficient number, since it is larger than the sum of its proper divisors (53914173).

161533059 is a wasteful number, since it uses less digits than its factorization.

161533059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17457.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 161533059 is about 12709.5656495413. The cubic root of 161533059 is about 544.6119157333.

The spelling of 161533059 in words is "one hundred sixty-one million, five hundred thirty-three thousand, fifty-nine".