2734252561 has 4 divisors (see below), whose sum is σ = 2736049392. Its totient is φ = 2732455732.

The previous prime is 2734252553. The next prime is 2734252597. The reversal of 2734252561 is 1652524372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2734252561 - 2³ = 2734252553 is a prime.

It is a super-2 number, since 2×2734252561² = 14952274134670117442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2734252561.

It is not an unprimeable number, because it can be changed into a prime (2734252531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896131 + ... + 899176.

It is an arithmetic number, because the mean of its divisors is an integer number (684012348).

Almost surely, 2^2734252561 is an apocalyptic number.

It is an amenable number.

2734252561 is a deficient number, since it is larger than the sum of its proper divisors (1796831).

2734252561 is a wasteful number, since it uses less digits than its factorization.

2734252561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796830.

The product of its digits is 100800, while the sum is 37.

The square root of 2734252561 is about 52290.0809045081. The cubic root of 2734252561 is about 1398.3403054951.

The spelling of 2734252561 in words is "two billion, seven hundred thirty-four million, two hundred fifty-two thousand, five hundred sixty-one".