161412253 has 4 divisors (see below), whose sum is σ = 162117340. Its totient is φ = 160707168.

The previous prime is 161412211. The next prime is 161412379. The reversal of 161412253 is 352214161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107785924 + 53626329 = 10382^2 + 7323^2 .

It is a cyclic number.

It is not a de Polignac number, because 161412253 - 2⁹ = 161411741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161415253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352200 + ... + 352657.

It is an arithmetic number, because the mean of its divisors is an integer number (40529335).

Almost surely, 2^161412253 is an apocalyptic number.

It is an amenable number.

161412253 is a deficient number, since it is larger than the sum of its proper divisors (705087).

161412253 is an equidigital number, since it uses as much as digits as its factorization.

161412253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705086.

The product of its digits is 1440, while the sum is 25.

The square root of 161412253 is about 12704.8121985333. The cubic root of 161412253 is about 544.4761152647.

The spelling of 161412253 in words is "one hundred sixty-one million, four hundred twelve thousand, two hundred fifty-three".