2545063961 has 4 divisors (see below), whose sum is σ = 2776433424. Its totient is φ = 2313694500.

The previous prime is 2545063903. The next prime is 2545063967. The reversal of 2545063961 is 1693605452.

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 a de Polignac number, because none of the positive numbers 2^k-2545063961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545063967) 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, 115684715 + ... + 115684736.

It is an arithmetic number, because the mean of its divisors is an integer number (694108356).

Almost surely, 2^2545063961 is an apocalyptic number.

It is an amenable number.

2545063961 is a deficient number, since it is larger than the sum of its proper divisors (231369463).

2545063961 is a wasteful number, since it uses less digits than its factorization.

2545063961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231369462.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 2545063961 is about 50448.6269486098. The cubic root of 2545063961 is about 1365.3151219575.

The spelling of 2545063961 in words is "two billion, five hundred forty-five million, sixty-three thousand, nine hundred sixty-one".