161061253 has 8 divisors (see below), whose sum is σ = 163347840. Its totient is φ = 158785440.

The previous prime is 161061227. The next prime is 161061269. The reversal of 161061253 is 352160161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161061253 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161061283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30198 + ... + 35128.

It is an arithmetic number, because the mean of its divisors is an integer number (20418480).

Almost surely, 2^161061253 is an apocalyptic number.

It is an amenable number.

161061253 is a deficient number, since it is larger than the sum of its proper divisors (2286587).

161061253 is an equidigital number, since it uses as much as digits as its factorization.

161061253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 161061253 is about 12690.9910172531. The cubic root of 161061253 is about 544.0811642252.

The spelling of 161061253 in words is "one hundred sixty-one million, sixty-one thousand, two hundred fifty-three".