161533039 has 2 divisors, whose sum is σ = 161533040. Its totient is φ = 161533038.

The previous prime is 161533027. The next prime is 161533081. The reversal of 161533039 is 930335161.

161533039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161533039 - 2¹⁷ = 161401967 is a prime.

It is equal to p_9055606 and since 161533039 and 9055606 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161533039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161531039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80766519 + 80766520.

It is an arithmetic number, because the mean of its divisors is an integer number (80766520).

Almost surely, 2^161533039 is an apocalyptic number.

161533039 is a deficient number, since it is larger than the sum of its proper divisors (1).

161533039 is an equidigital number, since it uses as much as digits as its factorization.

161533039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 161533039 is about 12709.5648627323. The cubic root of 161533039 is about 544.6118932565.

The spelling of 161533039 in words is "one hundred sixty-one million, five hundred thirty-three thousand, thirty-nine".