2835257561 has 4 divisors (see below), whose sum is σ = 2846038272. Its totient is φ = 2824476852.

The previous prime is 2835257531. The next prime is 2835257573. The reversal of 2835257561 is 1657525382.

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 2835257561 - 2³⁰ = 1761515737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2835257521) 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, 5389961 + ... + 5390486.

It is an arithmetic number, because the mean of its divisors is an integer number (711509568).

Almost surely, 2^2835257561 is an apocalyptic number.

It is an amenable number.

2835257561 is a deficient number, since it is larger than the sum of its proper divisors (10780711).

2835257561 is a wasteful number, since it uses less digits than its factorization.

2835257561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780710.

The product of its digits is 504000, while the sum is 44.

The square root of 2835257561 is about 53247.1366460207. The cubic root of 2835257561 is about 1415.3510532549.

The spelling of 2835257561 in words is "two billion, eight hundred thirty-five million, two hundred fifty-seven thousand, five hundred sixty-one".