161415053 has 4 divisors (see below), whose sum is σ = 165777660. Its totient is φ = 157052448.

The previous prime is 161415043. The next prime is 161415101. The reversal of 161415053 is 350514161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350514161 = 4799 ⋅73039.

It can be written as a sum of positive squares in 2 ways, for example, as 89453764 + 71961289 = 9458^2 + 8483^2 .

It is a cyclic number.

It is not a de Polignac number, because 161415053 - 2⁸ = 161414797 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 (161415043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181248 + ... + 2181321.

It is an arithmetic number, because the mean of its divisors is an integer number (41444415).

Almost surely, 2^161415053 is an apocalyptic number.

It is an amenable number.

161415053 is a deficient number, since it is larger than the sum of its proper divisors (4362607).

161415053 is an equidigital number, since it uses as much as digits as its factorization.

161415053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362606.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 161415053 is about 12704.9223925217. The cubic root of 161415053 is about 544.4792635683.

The spelling of 161415053 in words is "one hundred sixty-one million, four hundred fifteen thousand, fifty-three".