2742512161 has 3 divisors (see below), whose sum is σ = 2742564531. Its totient is φ = 2742459792.

The previous prime is 2742512153. The next prime is 2742512167. The reversal of 2742512161 is 1612152472.

The square root of 2742512161 is 52369.

It is a perfect power (a square), and thus also a powerful number.

2742512161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1974113761 + 768398400 = 44431^2 + 27720^2 .

It is not a de Polignac number, because 2742512161 - 2³ = 2742512153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2742512167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26185 + ... + 78553.

It is an arithmetic number, because the mean of its divisors is an integer number (914188177).

Almost surely, 2^2742512161 is an apocalyptic number.

2742512161 is the 52369-th square number.

2742512161 is the 26185-th centered octagonal number.

It is an amenable number.

2742512161 is a deficient number, since it is larger than the sum of its proper divisors (52370).

2742512161 is an frugal number, since it uses more digits than its factorization.

2742512161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104738 (or 52369 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The cubic root of 2742512161 is about 1399.7469204097.

The spelling of 2742512161 in words is "two billion, seven hundred forty-two million, five hundred twelve thousand, one hundred sixty-one".