161252943 has 8 divisors (see below), whose sum is σ = 226320000. Its totient is φ = 101843928.

The previous prime is 161252909. The next prime is 161252947. The reversal of 161252943 is 349252161.

161252943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161252943 - 2⁶ = 161252879 is a prime.

It is a super-2 number, since 2×161252943² = 52005023252322498, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161252947) 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, 1414443 + ... + 1414556.

It is an arithmetic number, because the mean of its divisors is an integer number (28290000).

Almost surely, 2^161252943 is an apocalyptic number.

161252943 is a deficient number, since it is larger than the sum of its proper divisors (65067057).

161252943 is a wasteful number, since it uses less digits than its factorization.

161252943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829021.

The product of its digits is 12960, while the sum is 33.

The square root of 161252943 is about 12698.5409791834. The cubic root of 161252943 is about 544.2969280368.

The spelling of 161252943 in words is "one hundred sixty-one million, two hundred fifty-two thousand, nine hundred forty-three".